I used a turbo ignition system, ancillary loom, ECU when i turbo'd the 85, MAP, IAT & Knock sensors too. Also a standard FTE oil filter relocator. Had the sump modified for the oil return. 212mm paddle clutch kit & flywheel. Maybe more shit. As ive said in loads of these threads there are loads of ways to go about turboing a 4EFE, just depends which way you wanna do it