The B-body platform carried a significant load for Chrysler Corporation during the late 1960s. Legends like the Dodge Charger, Super Bee, and Coronet, along with the Plymouth Belvedere, Satellite, Road Runner, and GTX, all owed their existence to this versatile architecture. Under the hood, these machines offered an aggressive range of V-8 powerplants spanning from 318 to 440 cubic inches, cementing Mopar’s reputation in the golden era of American performance.
By the time the completely redesigned B-body appeared for 1971, however, the muscle car boom was starting to fade. While Chrysler’s smaller E-body Plymouth Cudas and Dodge Challengers were at the absolute height of their cultural powers, the upscale B-body intermediate muscle machines were on their last legs. Perhaps no premium variant took this market shift on the chin as much as the Plymouth GTX.
The Evolution of the Fuselage B-Body
The 1971 model year brought a radical styling overhaul to the Plymouth lineup, introducing the distinct “fuselage” design language. The new look was polarizing, featuring large, rounded body sides contrasted by aggressive, squared-off wheel arches at both the front and rear. Up front, a massive chrome bumper completely encircled the grille, framing the quad round headlights in a look that buyers either loved or hated.
Beyond the aesthetic changes, the lineup was heavily consolidated. Convertible options were dropped entirely from the B-body platform for 1971. Despite the shrinking segment, muscle car performance remained formidable under the hood. Buyers could opt for three primary high-performance powerplants:
- 440 Four-Barrel: The base V-8 engine producing 370 horsepower.
- 440 Six-Pack: Utilizing a $3times2$-barrel carburetor setup to push output to 385 horsepower.
- 426 Hemi: The legendary dual-four-barrel flagship engine delivering 425 horsepower.
Regardless of the selected configuration, these big-blocks were absolute torque monsters. Even the entry-level 440 Super Commando V-8 delivered a massive 480 lb-ft of torque, ensuring the heavy intermediate could still melt its rear tires at will. Because of rising insurance rates and stricter emissions regulations, just 2,942 GTX units were built for 1971—the final year it existed as a standalone model. Most left the factory equipped with TorqueFlite automatic transmissions. From 1972 through 1974, the GTX nameplate survived merely as an optional package on 440-equipped Road Runners.
A Well-Preserved Driver Condition Example
The matching-numbers 1971 Plymouth GTX featured here recently crossed the auction block, selling for $36,750 on Bring a Trailer. Finished in a vivid Tor Red respray, the vehicle retains its original, numbers-matching “Super Commando” 440-4 engine paired with a three-speed automatic transmission. Power is sent to the pavement via a Sure-Grip limited-slip differential.
The classic Mopar stance is enhanced by 15-inch Cragar Keystone wheels wrapped in Cooper Cobra radial tires. Exterior options include rear window louvers, a decklid spoiler, hood pins, and a striking black stripe package across the hood. Comfort and drivability are aided by power steering and factory front disc brakes, while an aggressive exhaust note is provided by dual pipes flowing through Flowmaster mufflers.
Moving inside, the cabin features standard black vinyl bucket seats up front, a rear bench, woodgrain dashboard accents, functional air conditioning, an aftermarket radio, and an iconic pistol-grip shifter. The odometer displays 88,000 miles, and documentation shows a big-block that remains eager to fire up, settling quickly into a deep, rhythmic loping idle.
Preserving Muscle Car History Over Restomodding
The seller acquired the vehicle fairly recently but chose to part with it for a refreshing, highly honorable reason: to prevent a clean, matching-numbers survivor from being carved up into a modern restomod project. This preservation-first mindset earned widespread praise from Mopar purists and collectors in the auction’s comment section.
Make no mistake, this GTX is far from a concours-level trailer queen. It displays noted historical damage to the rear section, visible rust holes in the trunk floor, a thoroughly used, workmanlike undercarriage, and paint that the seller honestly rates as a “7.5 or 8 out of 10.” It is a textbook example of a solid #4 (Fair) condition driver.
Market Outlook for the Final-Year GTX
From a purely financial standpoint, funding a frame-off restoration for this particular car makes little sense. Market values for 1971 models have remained relatively flat for an extended period, with the absolute best, concours-grade examples in the world commanding roughly $100,000.
However, maximizing profit margins was never the objective here. While some casual observers might argue that this specific muscle car’s glory days are in the rearview mirror, the Mopar faithful would enthusiastically disagree. For a preserved, numbers-matching big-block driver like this, the best road trips are undoubtedly still to come.