I am running a fuel injected magnum 408, specs are mopar cast crank, eagle I beam rods, Keith black 9.8:1 pistons, cam is 218/224 lift ground at 114 cl with 4 degrees of advance ground in and another 4 at the chain. Mopar RT 1.92 heads, Mopar 4bbl intake, Harland Sharp 1.6 Roller rockers, 52x55 mm throttle body, SCT Tuning. been built for 7 years now and can drive it any day I choose as long as it does not rain..if it rains I have to drive it carefully.