After reading through some of your other posts I'll throw a few things out there (bored at work). Don't take any of this as a lecture, and I'm not talking down to you.
Throwing parts/boost at it isn't the answer. The biggest gains that can be had come by making what(ever) you have WORK RIGHT. The best money you could spend would be getting set up to tune (or at the very least monitor) your truck, if the $$ isn't there for that, find the closest person who is and get together.
It is a hard thing to do, but not racing that "sh*t talking ricer" revving at the light is a lot less embarassing than throwing a rod out the pan trying to race him while your truck is knocking/pulling timing/... You really need to know what it is doing before trying to find out what it can do.
Working on/tuning these things really needs to be something you enjoy unless you're not planning on keeping it long, or have really deep pockets. The info is all here, if you can't find it just ask. Worst case you get told to search (and probably pointed in the right direction also). Just my $.02, best of luck to you.
Edit: Do you have a boost gauge (not stock)? Is the turbo the only thing you changed? Did you do what was suggested here?:
http://www.syty.net/forums/showthread.php?t=49489&highlight=base+boost