The 4 banger S-10's are dogs. Best thing you can do is either swap out for 4.3 Vortec or 350. There are a couple of things you can do, such as intake, exhaust, and maybe headers(if you can find them).
www.turbos10.com came out with a turbo kit for the 2.2's, you may want to check that out. If not you can buy my 2001 4.3 with full body kit, dropped, 17's and a bunch of extras for $8500.