Quick rim question
 

So i just picked up a set of slicks and have been looking for some rims for them, but craigslist is failing me. Question is will these fit the mustang? http://www.summitracing.com/parts/CRR-3975812P/
Not too sure about the backspacing

An 8" wide wheel on your car is going to need 4.75" backspace +/- 1/2" approx., so those will fit fine :D

I am curious why you don't want to go with a set of 10"s? What size are the tires you have?

Jazzer :)

well I'm trying to go as cheap as possible at this point, I ended up picking up some 15 x 7 outlaw II's real cheap off craigslist. The slicks are MT 28x9's

why are you going with slicks? do you have the suspension for them? or the power for 28 in slicks?