an older Z that you plan to sell soon. I had horrible experiences, so I'd never do it again. Some have had decent results. Search and read. There are so many threads that begin, "I bought a jdm engine and it won't run right ...............". I say, find out what it will cost to fix yours and compare with IPP prices. If it's close, I'd buy from Kyle because all it takes is one little mistake to make the whole project a loss.