Quench(probably) cannot be had with what you have. If you milled the block & especialy the heads & the right custom head gaskets you could & with 21cc dishes the CR could be tolerable but with that much head milling the manifold alignment MIGHT be too far off in addition to pushrod length & the open chamber head receses can vary in depth and slope,it's a real pita. If you sold your heads & went with some magnums & custom .021 gaskets You'd have it & a much better head & you'd need the extra's that the magnum head conversion requires. The dish's are 21cc???