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Short answer is yes, they will bolt on to the head studs and cam towers. Intake stud lengths etc. are different and the big difference is port size. The alloy is better but ultimately power potential might not be as good given the smaller ports on 930 heads stock for stock.
For reference, I am using 930 casting heads for the better alloy in my Short Stroke 3.3L Normally Aspirated build…….. but they have been extensively ported with 4mm oversize valves and new seats by xtreme and a little welding to get rid of the CIS injector notch to match up with TurboKraft’s EFI injector blocks and 3.6L intake manifold. If I were to do it again, the cost difference to just get fully new xtreme casting heads is small enough, I’d just do that.
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