Will the P9 heads bolt directly onto an A8/R4 block ? Or should I say could I remove my P5 heads and bolt on the P9 heads? What are the valve angles and flow numbers of the P9? There's not a lot of info on them.
2010 Toxic Orange Challenger built by B and B Racecars! All aluminum R4/P5 engine, Proformance TH400 (3 speed) tranny, full Reid case, nodular 9" rearend, full Dragpak suspension, Protorque custom converter, BS3, PTE 85mm turbo, fire core wires, carbon doors, carbon front clip, and a whole lot more!
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