Mark,
Both fronts and rears have 4" of backspacing. My '74 had stock calipers on it. Only one of the rear rims has a slight nick on the very outter lip of the outside of the rim that can be easily corrected. I doubt it would even be seen (in it's current state) once a tire is mounted. The outter lip of the inside of the same rim has a couple of nicks. Those wouldn't even be seen with a tire mounted being that they're on the inside and under the car. However, they can all be fixed. Keep in mind that these wheels are probably about 15+ years old, so they aren't perfect, but they are in very good condition. A good cleaning will really wake them up. I doubt that they leak as they are welded together.
I bought them from a fellow member of this board (Bob Timma?). The front wheels in the picture of my red '74 are 7", and came on the car when I bought it (along with the 10" rears). They stuck under the front fender too much, so I searched for the wider fronts. When I found them, the owner would not break up the set, so I bought all 4. I never got them on the car because I bought my 5-S and sold the '74 the way it was. Therefore, I cannot attest to the way they behave, but the previous owner told me they were straight, or I wouldn't have bought them.
Michael
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