i have 2 3rd members out of a 91 4runner that will fit in mine. they are 4.88, im running 31x10.5x15 would that be bad if i put those 3rd members in before i got 33's??? would it mess things up???:shrug:
Your mpg and power may suffer bit, just as it would if you ran 33's w/o regearing.
And there's millions of people that have run 33's with stock 4.10 gears, which is an even greater difference than 31's and 4.88's.