24.38 mph per 1000 rpm in 5th

as opposed to 21.22 mph per 1000 rpm in fifth with the standard 195/60/14's and the twinky 3.92:1 diff assuming you've kept the same twinky mt75 box with it's 0.83:1 5th gear

mind you, if you've got the dohc 4x4 rear diff you'd only be progressing at 22.51 mph per 1000 rpm in 5th