18" Wheels on a Dart Sport ???

[DA4AD]

Looking at picking up some 18" wheels for the sport.
what kind of back spacing is everyone using?
I was under the car tonight taking some measurements and it looks like this will work for the back.

[ame="http://www.ebay.com/itm/1-AFS-Ford-Mustang-Wheel-03-COBRA-Rear-18-X-10-5-rim-CHROME-2003-1994-2004-/331125997840?pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr&hash=item4d18a5c110"]1 AFS Ford Mustang Wheel 03 Cobra Rear 18 x 10 5 Rim Chrome 2003 1994 2004 | eBay[/ame]

Now i just need to know what back spacing to use on the front?
:burnout:

 

[pauly v.100]

With a stock rear end probably 5" max. Deeper backspace means either spacers or a b body rear end. That's a really wide wheel.

 

[DA4AD]

Not sure what i have for a rear diff but I already have a 5-1/2" BS with lots of room.
Looks like the front rims need to be 9" max with a 6" BS.