I've got abuilt k24a4 on a z3 head. The block: Bullnosed/balance & lightened crank Blueprint ultralight rods Wiseco 12.5:1 pistons ACL race bearings main/rod ARP main studs Modded Type S oil pump. Head: Crower springs & retainers IPS K2 cams. Rbc intake manifold Fuel: 1200 Rc injectors Aem Fuel Rail Walbro 400 Aeromotive FPR Extra set of 660 PTE injectors. Transmission: Stock type s 6 speed. (second gear issues) Stage 3 clutch. Forced Induction: Rotrex C38-92 100mm pully Cheap Intercooler piping. Greddy Bov. Misc: Prb Kpro ecu Stock RSX axels S2000 Cluster K Tuned Tps Full Race trac bar Car is mostly complete and does start run and drive. Needs a tune exhaust and a few other odds and ends. I would recommend not driving it.