Well to start off, have you ever bought something thinking you got a good deal, only to get it home take it a part and find out you got one of the best deals of your life? Well this morning it happened to me. I was looking for a new rear for my car and a guy emailed me a $600 offer on a newly rebuilt 3.73 posi disk rearend. I emailed him back becuase it was a little step for me. He emailed me back saying it was just sitting in the way and he need it moved, how about $350. Sounded like a good deal, for a 10 bolt with richmond 3.73s. I picked it up yesterday looked it over a little and it looked good to go, new brakes and everything. I took it home in a snow storm yesterday and didnt look at it much after I unloaded it. This morning I go out to the garage where I store my parts and work on my car, to drain the oil and check it out. Go to remove the cover bolts there are only 9!:rockon: Drain the oil count the ring gear 37 teeth and 10 on the pinoin. I got a fresh rebuilt 9 bolt 3.70 posi with new disk brakes and pads for $350. The 9 bolt is the same form and fit as a 10 bolt right?

 

YES, and it was a good deal...:hail:

 

Ive got about that much invested in my 3:45 9 bolt.$150. of it was new axle bearings and had the backing plates blasted(well worth the effort looks nice)