Need help building 416 Stroker!

I have several 9.5:1 compression 360s with stock open chambers and a non quench pad piston. They are not very resistant to detonation granted they all have similar cams designed to make trucks run well at 2500 to 3500 rpm. The 408 I just built scat cast with hyper pistons .040 quench 9.8 compression with indy rhs heads is amazingly tolerant to detonation. I believe the chamber on the Indy RHS X head is likely the biggest contributor to its resistance to detonation. Brian at IMM suplied these to me and I can not say enough good about them. This engine is in a one ton truck and makes amazing power with a 228 232 540ish roller cam.
LONG STORY SHORT. I dont like the stock chambers of the chrysler heads they can be made to work with pistons for quench but then a future head swap for more power requires milling the pistons or new ones. The 408 i just built seems way more powerful than my eddie headed 11.2:1 422 ci engine in my Duster and its in a truck.