I feel the best bet would be L32 block and internals, Ported L32/L26 heads(they are a little bit better place to start from than L67/L36) and def use a L26 aluminum Upper intake with a ZZP HV3(http://www.zzperformance.com/grand_p...=214&catid=113) modified to fit, way back when that first came out people were amazed at the difference it mado on turbo cars