Youd be better off with a turbo 5speed, C52 and C56 are the gearbox codes. The GT turbo brakes arent that great, especially the rear, id just leave drums on the back, and get uprated front brakes. You dont actually need to go changing all the looms, i swapped in a GT dash with loom because i wanted the dials. The only loom thats really needed is the engine ancillary loom, this plugs into the ecu, goes through the bulkhead, plugs into the starter, alternator, injectors, map sensor, tps etc. and plugs into the existing ep8* fusebox in the engine bay.