Ashcroft has a few more ratios to consider. I went with the 4.37's with limited slip. Unfortunately, it will be some time before I get to drive it to give a report. My experience is therefore limited to the Rover 4.7's and 3.54's. IMO, the 4.7 is too low (makes everything scream to highway speed), and the 3.54 is just a little too tall (my 110 struggles to pull them, even with the Turbo). But many people report that they are happy with the 3.54's in a Series rig with a strong motor. That said, I think you'd notice more a difference (in the positive) with the 4.11's.
https://www.ashcroft-transmissions.c...ype-diffs.html
61 II 109" Pickup (Restomod, 350 small block, TR4050)
66 IIA 88" Station Wagon (sold)
66 IIA 109" Pickup (Restomod, 5MGE, R380)
67 IIA 109" NADA Wagon (sold)
88, 2.5TD 110 RHD non-hicap pickup
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