I think that rear axle is going to end up being WAY to wide for a T-style frame. I usually try to find something in the 56" wide range what is the hub to hub measurement on your axle?
or do what I did years ago ....... customer gave me a wide Galaxy 9" to use , I set it up in the T bucket ch***is , but I widened the back of the T bucket body 5 1/2 " and widened the bed to match . ...................... and it didnt look out of place either cheers Steve in Oz
The rear you got is 65 1/2 inches from wheel flange to wheel flange and has the 5 on 5 1/2 bolt pattern. The best part about that rear is that it being that wide it will be easy to center the center section. It also should be a 31 spline large bearing axle rear and there should be no issues cutting the axles. and the hubs can be re drilled to the 4 1/2 or 4 3/4 bolt pattern.