Hi guys, I'm about to order gears and having been using the calculator on 4lo but I'm putting in too many aproximations and don't want to bugger this up. I'm going to be running a new motor soon, probably a 383, a 350, and 37" (not certain the actual diameter) Trxus MT's. What RPM's should I expect to be spinning on the highway running 65MPH and expecting a decent balance between power and gas mileage? Your help is very appreciated, TIA. Jason. If you just want to throw in your own suggestions for gears please go ahead!