Input needed on engine mods

You should not have any interferance issues, although I'll have to double check the bore clearance in regard to the valve size. As long as you stay with the 318 size valves, you're fine. As far as intakes, the performer has very slightly larger runners than a factory intake, but comes with the 318 size ports..If you use the Magnums, you will have to notch the bores to fit the 1.94 intake valves they use. The "302"s use a standard 1.88 intake, and should clear fine. The eddy performer 318 can usually be found for $50-75 at swaps too...so it's easy to get.