available ratios between 3.08 and 3.73

[luvbowties]

What ratio differentials were available, thru 1972, between 3.08 and 3.73 that will work in a 1966 pickup? I cannot find a precise response, only approximations.

I want something lower, numerically, than the 3.73 now in my '66 stock differential--running with a 700R4. Mine is stock '66, but with the longer, later model 5-lug axles(using home-made spacers behind later, wider backing plates).

I've got a complete 3.08 diff'l. from a '72, but don't want to jump that far down. I'd ideally like to have something close to 3.42-3.50 range.

I'm almost certain I've seen reliable info from CaptainFab, but can't find it now. BTW: I don't ever come close to doing burnouts!
Thanks, all.
Sam