This is interesting with the different gear ratios and tire sizes. Best we have gotten was 16mpg on the highway with ours. Been getting around 10.5 mpg around town. I would love for your mileage.That's a great thought! ...I didn't think of that. I can think of 3 things I may not want:
(1) All SV's and Plat's came with the higher gears (3.3) whereas the SV's have the lower 2.9 rear gears. I get 21 MPG on the highway with them, so maybe that's it?
(2) The smaller 18" wheels on the SV's could be more desirable over the 20" by someone?
(3) SV's don't have Intelligent Key; that's something I would NOT want personally.
I started a thread on the Interior Mods in case you're interested about the leather.