The truck will be a daily driver(less than 20 miles) and a tow-rig maybe three or four times a month. I plan on running a Eddy dual plane and T-Quad as that's what I have been running for years on the truck. It currently has a no-name RV cam. I will continue to use the factory center-dump exhaust with full duals. So I guess I am reall wondering about compression, cam, factory head choice between 1972-1978. I could re-use my current 452s, should I use the motor-home heads? What is the number for them and do they flow the same as all the rest of the heads. I have read the articles about the factory heads but I am not sure if they covered the motor-home head?