1jz is plug and play with my car. The wiring harness is a direct match with all accessories. The major difference between the 1jz and the 2jz is the stroke. One is a 3.0 sequential turbo and the other is a 2.5 bi-turbo. Both blocks able to go the distance, but who wants that much power in a daily driver? The 1jz comes just short of 300 wheels. If I get it up to 400 with bolt ons I'll be happy.
