I use to race a AP5 as a street stock many moons ago, I restored this VC put a hot ex race Hemi 6 in it, I like that Valiant colour.
The old slopper motors are good and strong and I mean very strong! after using a AP5 in a demolition derby my mates and me (teenagers!)
put a brick on the accelerator full throttle! The engine just sat there and valve bounced, I shut it down after about five minutes.