HELP... I have 18x10 inch wheels, any way to make them fit my '01???

I recently came across a brand new set of 18x10 roush wheels with brand new rubber that are meant for the 05-newer body style. They are simply too wide for the front of my '01 Stang. Is there any type of adaptor/spacer out there than can be purchased (and be safe)? Any advice would be appreciated.
 
I'm fairly sure a 1/2 spacer will fix your backspacing issue. the only difference with the newer wheels is the offset I believe.

our stock offset is around 35 I think. you should be able to find the factory offset for 05+