What year B-body housing? A 68-70 with a 1/2” spring offset would basically make a 18x9 +35mm a perfect wheel. And since you’d have to move the spring perches on a B-body housing it’s the perfect time to install a 1/2” spring offset.
I have quite a few here actually I think I have a 69 for sure here that could get some new perches. Make life easier in the long run and wheels would be more available too.