when u say turbo of the ca18det u mean the standard turbo which is the T25 not the garret GT series turbo's which is a GT25 they are about 1000$ more than the good old T25 anyway my advice if u want it 2 last is 2 buy a t25 turbo that needs new seals and put carbon seals in so that fuel doesnt eat the seals out which leads 2 lots of oil loss through the turbo and run your poor little a12 will die, also with the SU try getn one that come of the 200bSSS it worked well for me, good luck