Desperately need rims on stock

Mark, Where in ORL are you? I've got the bullit style wheels ( 17x8 ) on my Duster, with spacers...but I check them all of the time to make sure they aren't coming off.

The max backspace that I was able to run was about 4 7/8 with a 205/60/15 tire ( explorer wheel ) and the tire was about 1/2 an inch from the spring..close but not rubbing.

IMHO
Bottom line:
You'll need spacers unless you plan on relocating the springs in the rear and the wheels will still be too far inside the body.
You'll need spacers for the front, I'm almost positive the rim will hit the tie rod end without them...

Check the thread about mustang wheels on a-bodies and you'll see what the issues are...