I have a full MAC exhaust in the mail and am now thinking I may aswell install the heads, cam and new intake that I had planned on doing in the future along with the install of the exhaust. I have some questions, though. I am going with AFR 165 heads, Edelbrock RPM II intake, and e303 cam. The car has lots of miles, but my dad doesn't care and just want to see what will happen with this combo. Are there any supporting mods for the above combo that I should get? Hardened pushrods? Hydraulic lifters? Et cetera... Anything with the fuel system that should be updated? What about a throttle body, what throttle body would y'all recommend going with to optomize this setup? I am think 70mm BBK. Would that suffice?