according to an offset calculator, the outside of a 4" wheel with -22 offset sits almost the same as a mustang gt wheel (8", +30). so that sounds like a good fit.
unfortunately offset is not directly derivable from backspacing, since the 4" doesnt include the lip of the rim.
do you have stock suspension in front? if so, its a really close call (how far will it compress on the brakes?)
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Last edited by josh18_2k; 03-20-2008 at 02:27 PM.
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