New 1972 duster member

So I got the car up on jackstands and found the 8.8 ford rears tag it is a 4.10 limited slip. Going to have to thing about transmission choice a little more now. The restoration guy I bought it from said he thought his client said it was a 3.73. I really wanted to go with an a833 od unit as the t56 seems a bit hard to do with all the cutting required and I can't seem tonfind any good info on how much cutting a tkx might require.