Okay, got a quick question. Swapping to an AOD and I decided to go with a 3.73 rear ratio. Only problem is I havent found a 3.73 for the 8 inch rear, only 3.8. No big deal except which speedo gear do I use. I had it figured out for the 3.73, but the Calculator I was using was on a 5.0 site and has no provision for the 3.80. Anyone know of a good speedo gear calculator or which gear I should use for this setup. The tires are 205/75 R 14 (overall diameter 26.11 inches). Any help is appreciated.