I've got a general wheel fitament question for you guys...

[firebird1999us]

I'm interested in a set of American Racing Shelby series 427s for my 2003 Mach 1 -- I was hoping someone here could help me out!

The wheels come in 18x10 and 18x8 sizes and are offered in a matching lug pattern...but what I'm not sure about and what nobody has been able to answer for me is will they work with any of the backspacings offered by American Racing?? Here's a list of the custom backspacing's offered:

427P-Custom 18x8 Rev: 1.50 – 2.25
427P-Custom 18x8: 3.50 – 4.25
427P-Custom 18x10 Rev: 1.50 – 3.25
427P-Custom 18x10: 3.50 - 6.25

Basically I need to know if they will fit, if they won't how far they'll stick out or under the car...in other words is it something that can be legitimately fixed with a spacer???

I'm calling American Racing on Monday about this;-)

Here are some pics of the wheels:

 

[firebird1999us]

bump!

 

[fatboy02gt]

i believe that our cars require a 6.5 inch backspace to fit an 18x10 on the rear and if you want 18x8 on the front i think its 4.5....american racing offers 4.25 and 6.25 im not sure thats close enough hopefully someone else can confirm that for you.