Is this VIN a 68 340S?

The P is actually the code for the 340 engine and with that came the Formula-S package. H is the code for the 383 engine and along with that came the Formula-S package. The Formula-S package would be better described as a suspension package more than anything else but it was always accompanied by a hot engine, whether it was HP 273, 340, or a 4 bbl. 383. As our new member (formula-s) said, disc brakes and sure-grip rear ends were both optional equipment on Formula-S models.