ok nissan gods.......i want to know what the differences are between the ca18det and the sr are. what i mean is what are the small differnences.....like whats the difference in wiring?. turbo size?, coolant inlet/outlets. the small shit you need to know when doing a swap. should be the same tranny, right? will the sr down pipe work? etc.... now i'm talking about s13 CA vs. s13 SR just so there's no confusion.