Jay, yeah I have gone through your site a few times now. I have a stock-ish 283 and a 3.73 rear end, so I think the 0.72 OD should be just about right.
Once I figure out my budget I will hit the junkyards around here and see what I can find.
Haha! I have a fresh 283 in my 1965 C10 short bed stepside and a 3.73 rear axle. The T5 has the 0.72 overdrive but I’m seriously thinking of swapping to a 0.86 overdrive gear because these 283 SBC engines like the higher RPMs. I have a 1963 C10 short bed fleetside with an inline 230 and 3.73 rear. That T5 has a 0.79 overdrive gear and does fine in overdrive.