I want to order SS style wheels for my car. I see that there are 6", 7", 8" and 10" widths in 15" wheels. You can get them with 4" inners, 4 1/2" inners, 5" inners and 5 1/2" inners. What did original Camaros come with?

Look here:
http://www.camaros.org/suspen.shtml#Wheels

The 14 x7 YA coded SS wheels were 4" backspace.