It appears that you can get a 3.73 rear as an option. If I go with the aisin and 20inch wheels would you all recommend staying with the4 3.42 or going to the 3.73. I understand the tires on the 20 inch wheels have a lower profile, so overall, until I change the tire to something else it may be close to the same diameter as the 18 inch currently. So will the 3.42 be too high now and perhaps if I add a slightly taller tire in the future.