If your interested I can do some dyno testing for you to. The gains do seem kind of big? Did you recheck the timing after each box was changed? To be honest just as long as the HP is the same as the orange box i`m sold. Our factory stock racing class 100 cars strong has just outlawed MSD`s, it would be nice just for the rev limiter. Let me know.
Dave Dudek 1st Factory Stock legal car in the 10`s!!! FAST & Factory Stock Rules: www.fastraces.org Call or PM for your complete restoration or engine needs. (586) 945-4982 F.A.S.T. 1971 Hemi Cuda coming soon! FAST 69 Hemi RR 9.98@139