Introduced in 1967 as a luxury option in the Belvedere lineup, this model used the same platform as the Coronet. But it was much more luxurious and had 375 HP 440 V8 standard. Plymouth wanted the GTX to compete with luxury cars of the period. So it installed almost all possible comforts and unique trim to distinguish the GTX from the rest of the model lineup (via Classics).
The GTX was a gentleman’s hot rod with lovely interior and exterior details. There was only one optional engine choice – the mighty 426 Hemi. The 440 Magnum was standard. But if you wanted the ultimate Plymouth muscle luxury, you had to go for the Hemi. It was significantly more expensive than the rest of the Mopar muscle car lineup. Because of that, the GTX was never that popular and is pretty rare today.