Wildest and Best performer for 302 cu.in. 1.6 R.R. & 6500 rpm and 9:7 comp. Great with TFS Twisted Wedge, Edelbrock w/1.9 intake valve and AFR 165 heads. Must use Anderson Hi-Rev valve springs. Minimum 30lb injectors and 80mm mass air. Recommend 4:30 gears. Poor drivability under 2300 rpm, lumpy idle, rpm range 2500-6500, needs 2800-3400 converter. Must check piston to valve clearance.