Please don't think much of that math. I'm almost sure it is more in depth than that, mine's just an estimate.
Went to that skulte site, it had the chart I was looking for.
From what I've gathered, the 3rd gen Fbody front end, the Gbody, and the 2wd Blazer are pretty much the same in that they use a 8" wide rim with zero offset. But, I'm not sure if either of us can use that chart with complete success, due to the fact that the Camaro might accept more backspacing than our automobiles.