I have replacedmy 89Isuzu Trooper power train withGM and Dodge equipment. The drive train is still mostly stock and the 4.55 differential gears are much too high. Instead of retro-fitting new axles, I am wondering if Isuzu makes lower gears(2.90,3.10,3.73 etc) to work with the 3speed GM Turbo 350 Tranny and Dodge transfer case I have installed. Drive shafts have been made to fit the stock axles and I don't want to have to redo them to match a new one. I didn't think the stock gears would be a problem whenI thought out the conversion...........oops! It now tachs. 2600RPM at 55MPH, juuuuust a bit much for on-road use.I would greatly appreciate your insight..........................Scott