1st,just swap intakes and your efi system will bolt on / work with your 22r.

If you don't want to keep efi, all you need to do is get a fuel pressure regulator for the electric fuel pump (carb wants 4-7psi). The only electric wire you need is a hot wire to the choke, and hot/ground to the fuel cut solenoid. See my carb faq link in my sig for more info on the wiring.

I'd swap the EFI over to the new motor personally, although you didn't hear it from my mouth <img src="/forums/images/graemlins/ignore.gif" alt="" />

-Scerb

http://www.scerbfab.com/carb_faq.html