Yes this a very common Mod for guy running 37s on a 80. And he is correct you can go 11/4" forward with no other mods .In trying to address my soon to be wheel position issue.... I was talking to a 4-wheel guy in Australia that claims to have moved his front axle forward on his 80 frame by moving the control arm mounting hole forward 30mm. He was claiming that nothing else needs to change. He said to weld in a little plate to cover the old hole and drill a new one 30mm forward.
Has anyone heard of this before?
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short of cutting everything off the front and starting over that 11/4" is all you gunna get. JMHO