Have a 87 stang. 302 with 351 windsor heads. E-303 cam with 1.7 rockers. I have 2 questions. First are the 1.7 fine with the e-303 cam or are 1.6 beter and why. Second is, the car was a 5 speed I am turning into an auto. I am biulding a bad a.. trans for it. Can I use my harmonic balancer or...