Yeah, the spreadsheet just has the popular ratios to see the sweet spot. If I went to 3.73 I have 3.54 geared Dana 60 I could re-gear. 4.11 is a pipe dream with a '65 HO52. I may get lucky, though.
Shane
Shane's Toys... 2007 Forester XT Limited (2nd Owner) 1991 Cherokee Laredo (2nd Owner) 1981 Chevy 3/4 Ton Fleetside 8,600 Camper Special (3rd Owner) 1965 Chevy 3/4 Ton Fleetside (3rd Owner)