S13 swap s15 Questions!

[240sexgang]

Hey guys, i recently acquired a 89 s13 hatch. The car has a blacktop s15 in it with the s14 transmission in it to avoid speedo sensor crap. It has all the mods from a s14 motor. These mods include. Garret gT28 turbo with a hks wastegate and blow off, megan racing headers, enjuku intercooler and radiator. Might be missing a couple of things. The kid i bought it off couldnt get it to run since he spliced the harness himself. I went and bought the complete harness from wiring specialties. I also bought a s15 ecu. But i was wondering as to what else i might need to finish this build. Or even if these mods are correct for this motor. New to the nissan world and would love some help on this build.

[frapjap]

Welcome to NICO!
Sounds cool, hope you got a sweet deal on it!
You definitely did the right thing and started with a proper wiring harness and ecu. Once you get it plugged in, you'll know better what you might want to do next once it fires (or doesn't).