1969 Plymouth GTX – 13.70 seconds
Price New: $3,600
Price Now: $70,000
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 as standard. Plymouth wanted the GTX to compete with luxury cars of the period, so it installed almost all possible creature comforts and some unique trim on the outside to distinguish the GTX from the rest of the model lineup (via Muscle Car Facts).
The GTX was a gentleman’s hot rod with lovely interior and exterior details but only one optional engine choice – the mighty 426 Hemi. The 440 Magnum was the standard engine, but if you wanted the ultimate Plymouth muscle luxury, you had to go for the Hemi. Because it was significantly more expensive than the rest of the Mopar muscle car lineup, the GTX was never that popular. It’s quite rare today as a result.