You can also try JEGS for these:
http://www.jegs.com/p/Cragar/747536/10002/-1/36662

Make sure you check the backspacing on your rims before ordering. Too much and theyll scrape the wheel well liners. Too little and theyll rub the fender lip of the wheel well opening.
I "think" the stock wheels are 5.5" backspacing, but Im not sure.