Lots of people put the eagle heads on the earlier engines and that puts them around 12 to 1. If using a stock ecu, just need a tune.

68 Road Runner, 69 Belvedere, 71 Challenger Vert
340 barracuda, 01 Ram CTD, 95 Ram, 04 Ram, 85 Daytona turbo Z
66 GTO, 06 Magnum RT AWD. 07 Ram CTD, 07 Ram