Well, as opposed to an OBD-1 conversion, I'd recommend saving for an aftermarket turbocharger system..

Alternatively, a 55hp "dry" nitrous oxide system, used wisely would complement your existing modifications nicely. ZEX makes a very competitive kit that's darn-near foolproof. Of course, you'll need to buy refills...

Master Yodub is our resident authority on nitrous, if you're interested.