awhile back I saw a 2031 powermax for sale locally that I couldn't pass up. I paid 50 bucks for the cam and spring kit still in the wrapping. I was working on a 1988 mustang project with recently rebuilt Home ported E7s, keith black hyp. pistons, typhoon intake, 19 lbs inj.,and a 65 MM tb. Not exactly the best combo to work with this cam. The 2031 i bought was made for 1.7 rockers and gt-40 heads. Has anyone tried one with 1.6s and e7s