got mine under my 71 today. I love em. I added an exta hole on each side to give it 5 options. Dunno if I'll ever use them but easier in the press now than on the axle later. I installed my 56s backward then used the perch to move axle an inch forward to give it kinda a 3" back from stock effect. Haven't welded on till I get my shaft and I get u-joint angles perfect.
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