I know Jess and have actually been on the track with that car and have ridden in it too,
it was a 318 3 speed car ,and as you can tell it is no longer stock, it does however retain the stock style torsion bars, a mono leaf rear 4:56 gears, but uses a rack and pinon steering,pretty sure he is running a factory 4 speed ,engine info top secret................
since it is for vintage racing certain things have to remain factory appearing ,not sure what rules they have but his car fits the class very well ,just a killer of a car