Wheel Offset

[univell]

Does anyone know if a 20x8.5 wheel with a offset of 34 for the front and a 20x10 wheel with offset of 18 would fit on a 99 mustang?

 

[SonicStang]

Positive or negative offset? Why 20's!? ???

 

[univell]

got a buddy with them sittin at home so why not lol jus for a lil while