[njsteve]

I used the Bontempo Brothers Speed Shop, 1539 W Blancke St, Linden, NJ 07036-6219, (908) 862-6336

They have had a speed shop for about 40 years in the same location. It's like walking into a time warp with all the vintage stuff they have hanging on the walls. They specialize in rear differential work.

I had them set up the 10 bolt rear for my 72 T/A. It did cost about $1100. They hot tanked the housing, replaced all the gear and axle bearings, rebuilt the posi unit with new clutches and reinstalled and set up the original 3.42 gears. The days of the $200 gear swap are well past unless you do it yourself.

Remember you always have the time and money to do it right the second time around.

With rear end gears you really need a pro (or someone who knows what they are doing) to install them. You can destroy a new gear set in about 10 seconds.