ls swap help

im goin to do an ls swap soon like in the next month or so. ive got mounts and linkage what else do i need besides motor and tranny? i would really like to know about wiring... my hatch is an si i know i can use my ecu and harness for a zc and it will run ok but is an ls diff?
HELP PLEASE

wiring is the same. just put your engine harness on the LS

you need LS axles, and to pop out the dust shields on the front hubs.

thanks for the help if im goin with a b18a can i use my ecu or would it be better to got with the teg?

the teg one, fuel maps are a lot better for the engine. but they both work