What Gears???

I like my 4spd with 4.10's with a 26 inch tire. (235/60/15 or 245/60/15)
If you go to 4.30's, go up 1 inch. (255/275) 4.56's or higher, go up another inch to a 28 inch tire.
The 4.10's and the 26 or so inch tire will put you in the low to mid 3K range on cruise, on the Hwy.