If you are planning a stock engine with less than an actual 9.5:1 cr like the post 71 engines, I would go with a milder cam and sell that to someone that could really use it. The x,j,o heads that have the 2.02" intakes will work, but as AJ said, I would put work in them. I ran the cam 2 degrees advanced and I still kept my redline to 6700 with all forged stuff inside. Any higher than that is strictly for racing, and not longevity. Just my $.02
