Go back to page 7 or 8 and check out Buying a 90 Wrangler. If given the choice I would buy the 91 with the 4.0L (fuel injection). I have a 83 CJ7 with an auto and love it both on and off road. The 90 will more than likely have the 4.2L with a piece of junk Carter on it. Not sure about the size of the wheels but I am running 31X10.50's on my stock 15X8's with no problems.