I have one in my 360,sounds really good and I still have the lame exhaust manifolds in my '66 Barracuda.
I was originally looking at a Extreme Energy cam but when I was working at the speed shop still our sales rep at Comp who happens to be the head tech guy,said the Thumpr cam makes more peer than the Extreme.


1970 'Cuda,Lime Light,499 Indy S/R's 10.70's @125,street driven ALOT!
1966 Barracuda 360,now a 5spd,Hemi Orange,Hot Rod Air,
New daily driver-2003 Ram 2500 Cummins 5.9
'69 Valiant 2-dr, sleeper!
New project---1938 Dodge truck, plan is a 360 with a A500, AC, Calvert rear susp., rack and pinion front with coils.