I will be keeping from my 3dr
subframe, steering rack, T5, Diff, driveshafts, shocks, hubs, brakes, sump Dan has pointed out that you need the diff hangar, engine arms and 2wd modine and bolt, gearbox mount as well

all peanuts really
I am just gonna keep these bits from my 3dr and worst case scenario is i'll just 4x4 it again if i dont like it i guess
Its all bolt on so not that bad, just wonder what the straight line stability/speed will be like with the wrc kit compared to a 3dr with a 500 kit