where to get 1" wheel spacers?

I think Laurel Mountain Mustang has them for a good price, but they are hard to find on the website.

I found it $134.95/pr Eibach

http://www.laurelmountainmustang.com/index-1024.htm

eibachwheelspacer.jpg
 
They will actually be a wheel adapter (with lug bosses for your existing lugs and new studs to bolt the wheel up). DO be sure to go with hub-centrics (not lug centrics). Both shown are hub-centric (that ring on the ID is the hub-centric part).

Eibach, MM and H&R are all top notch.

You might have to shave your stock lugs down a little if your wheels dont have an open spot on the backside.

Good luck.