Screwed Up Rear End Need Help With Front Suspension!
 

I screwed up royally... I just bought 4.10 gears for my rear and after driving around some (not on the blazer I am fixing) I realized:

****! If I change the gearing in the back don't I have to change the gearing in the front? **** ME!

The Blazer: 1995 Chevrolet S10 Blazer LS

Now I quickly have to figure out how to identify the front diff so I know which ones to get.

Does someone know of a chart for the front diff? I have seen tons for the rear but none for the front...

The truck is in my father-in-laws garage so I can't go take a look at it.

I need to some info ASAP Please Help!

Edit: Please confirm that the Blazer S10 has a 7.2" IFS front...

What was the old rear end ratio?? the front is the same. In the glove box there should be an (RPO) option sheet. A list of codes are on this forum.