how is that possible. even forgetting the engine the 545RFE beind the 4.7 has WONDERFUL overdrive ratios, so i don't get how your niner gets better highway mpg.
i have no clue but ill get pics...
1998 ZJ 5.9L 122k miles - DD, 242 swap, 3.5" RE, 32" BFG M/T, safari rack, roof-mounted lights, custom steel front bumper with hitch reciever, 10k winch :)
2004 WJ 4.7L 107k miles - her daily driver, 2" daystar BB with scorpion shocks.. not too bad! stuffed 265/65/17 General Grabber AT2'S