lsd

I have reason to believe that the diff on my 2wd 2dr 5 speed blazer is on its way out. I want to replace it and upgrade it with a junkyard posi diff so I can start doing full burnouts instead of one-wheel-peels, but I've heard that 4wd posi rear ends wont fit on a 2wd.. Is this true? Which...

Today I go to pick up my new 2003 Chevy S10 Xtreme with the 4.3. 110,000 on it, some crappy aftermarket "steelies" on the back and no exhaust. It needs paint, badges, a 4th stock Xtreme wheel, a front air dam, and just some touching up. Hoping too have some ideas bounced around. Will post pics...