Ok im going nismo 740cc, 2.5" piping etc. but my only problem is internals. U dont think it would be ok to buy the rebuild kit: pistons, rods, oil pump, timing belt , etc and just install on my engine now as is (of course i will take to shop to make sure block and heads are good)? I mean if i do that it is saving me $2000 than going with ipp.