I was wondering if anyone out there with a 2nd generation S-10 blazer 2wd has ever or knows how to convert the rear end over to a limited slip? I have seen pieces that look like they could just be added to the pumpkin but wasnt sure. Anyone done this yet?

 

There are many different ways you can go. You have the 7.625" rear diff with (I believe) 28-spline axles.

The cheapest and easiest to install option is a Powertrax locker. This will drop into your open carrier in place of the spider gears and not require the reshimming of the rear diff.

You then get up into a new center section for your diff that is either limited slip, locker, or selectable limited-slip/locker (eaton e-locker, etc). They are much more expensive and take some knowledge, experience, and a few specialized tools to setup properly.