I recently found a 12 bolt in a junk pile. I was intrested because i have 3.08's. Soo can anyone tell me if i can pop this carrier into my housing to lower my gears. its a 12 bolt like mine, and is stamped 3817778 11-41 G.M. 60 i think it is 3.73. it came off an old like 50's truck but may not be the original for that truck. Also, how wide is the stock 12 bolt in a blazer? and where are you measuring from? Thanks for your help!