Ummm, why not just sell some of the JDM tyte tuning shit like injectors, SAFC, Z32 AFM etc. and buy a COMPLETE RUNNING engine and sling that in, as I know you can manage a basic plug in engine swap.
You don't need the power, especially as you have a cage and some good suspension goodies and diff. Remember my S13? lowering springs, welded diff and a bog stock SR still running std boost and WMIC! It rocked, and I was a bellend for selling that as I now have to do all the work I did to that over again with the shit I have now.
You should be able to get a basically complete SR for about 800, possibly with turbo, you might not even have to sell your FMIC.
Its not rocket salad darling!