Do you have the REX already.If so get the B16A1 Cable Trans.Your Rex is a light car. Are you putting the swap in yourself? For everyhting you're going to spend at leat close to 3 grand whole swap.Motor,Trans,Ecu,Axles,Shiftlinkage & motor Mounts.I spent $3200.I love it in my Civic Si hatch.Keep in mind w/B16A you can get LSD optional another $250.Also make sure your provider send you a B16 manual ecu & not a auto ecu. If so your reline will be 7.6 instead of 8.2 & regardless which ecu top speed is 110. You can always chip ecu. Good luck