I'm in the process of finishing my Camaro and the "roll-around" tires I've had on it have dry rotted and won't hold air anymore.

I'm looking for the typical pizza cutters up front, and I'm looking to run the traditional outlaw 10.5 tire in the rear, which I believe means I need a 10 inch rim.

I've got a Moser Ford 9" rear, with Wilwood 4-piston calipurs (front and rear) and am looking for a wheel that is reasonably inexpensive (looks are secondary) and fits over said calipurs.

I've never measured for back spacing before, so I'm looking for some guidance. Either that, or someone with the same setup can chime in with backspacing and wheel size measurements, but I'd prefer to know how to do this so as to avoid having to return anything that doesn't fit.

Thanks!