Mine is a 64 hardtop. Runs 12.20s@107 It is a 306 with 351 heads.1.94 and 1.60 valves and mild flow work. 4.56 rearend 9". Spool,ladder bars and mini tubbed. 5000 stall. C4. 12.5 comp. 10" slicks. Crane solid cam. Shift at 6800. 750 holly double pumper. It's lots of fun!