Plymouth GTX 440 Magnum
While the Plymouth Road Runner offered no-frills muscle on a budget, the GTX was its sophisticated older brother. Launched in 1967, the GTX came standard with the 440 Magnum V8 — no small-block pretenders here. Every GTX had heavy-duty everything: suspension, brakes, cooling, and drivetrain. The interior featured simulated woodgrain, bright trim, and a level of refinement unusual in muscle cars. The optional 426 Hemi made it a genuine supercar. Plymouth positioned the GTX as 'The Gentleman's Hot Rod,' and the name fit perfectly. Lower production numbers compared to the Road Runner make GTXs rarer and increasingly collectible. The 1967-1968 models with their clean B-body styling are particularly desirable.
GTXs are rarer than Road Runners and command higher prices. Hemi cars are worth 3-5x more than 440 models. Documentation is critical — many Road Runners have been converted to GTX clones. Check broadcast sheet, fender tag, and VIN decoding. The 440 Magnum is a torque monster and extremely reliable. B-body Mopar parts availability is excellent.
Built 1967-1971 on the B-body platform. 440 Magnum was standard; 426 Hemi optional at extra cost. Production was always limited — Hemi GTXs are especially rare. The GTX was discontinued after 1971 as the muscle car era faded.