Join Date: Apr 2000
Location: Danville, CA USA
The HD TA comes with a front crossmember that has four sides (boxed). The standard TA comes with a front crossmember that only has three sides (no bottom). Also the front and rear plates on the HD crossmember are both flat. On the standard TA, one of the plates is flat and the other has an offset (jog) in it. The photo that svtruck posted is definitely of a TA with a standard crossmember. From the photo, I can't tell if the TA is an HD or standard. The easiest way to tell is by checking the diameter of the bolts that hold the TA legs to the front of the differential housing. The HD uses 1/2" bolts, the standard uses 3/8" bolts.
There are many small differences between the standard and HD TAs. It's not possible to turn one of them into the other.
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