Call Dave or Darren at Pro Trans. 661-940-7400 and ask them about the gear ratios they would use in one of their 3 speed tranny for that car, I know they offer a 2.20 low gear and I think they offer higher low gear set than that like a 1.80 ratio also
i have friends who race in the P.S.C.A. heads up series with a lot more power than that that ran their, Pro Trans, tranny and love them