Air shocks

Anyone have any experience putting air bags on an S-10? I have an '87 and I've been thinking about it, the body roll and handling suck so I'd like to improve it. I've seen front systems but not too much for the rear. Any help would be appreciated.

I am also working on finding a decent 350 or 400 to drop in it. From what I hear "you pull it" junkyards are the way to go so I'm going to try that. Any suggestions welcome. Right now it has the crappy carbed 2.8 in it so...

E-mail me at s1099extreme@hotmail.com and I will help you out with all of your questions, I have done both. So hit me up.
Thanks