I own a cruiser same year and daily drove it and wheeled it with 35's and 5.29's. There's no way id go with 4.88 gears knowing how it drives with the 5.29 gears. It would go the speed limit and drive with ease on the highways. No issues with high rpm's or running out of gear. Just my 2 cents but...
i didn't catch it so if you posted it no worries but what are you doing for a fuel cell? If youre interested i have a fuel cell for your application and i need to get a smaller one for the cruiser.
it is one of these https://www.jegs.com/p/JAZ-Products/JAZ-JeepSpeed-Fuel-Cells/1248359/10002/-1