I do know my track widths involved with this graph. The AD trucks track width is 59 1/2". The camaro sub is 59.8-59.6 for gen 1 61.3-60.5 for gen 2. As you can see, you can make up the 1/2" to 2" with less back space. The worse case is 2" to make up (1" less backspace per wheel X 2 wheels). There is not agruement with this simple math. Don Meyer is absolutely correct.
Further, I have seen several AD trucks with a camaro sub successfully graphed proving the point that this graph works on AD trucks.
Ths source of this info is at
http://www.quickperformance.com/Tech...us_measure.htm. The only part that is not referenceed on this site is that track width of an AD being 59 1/2. This is from my knowledge.