need help with backspace on buick GS

[clu269]

What to know if track width is the same on all A bodies and what backspace to run on front. I am going with rushforth 19x8 on front. Is 5.5" correct?

[BaddestBuick]

You might want to try V8Buick.com, if you dont get info here

[mjoc1]

what year buick GS. The wheel whell is very same on the pre 67 and a little bigger up to 69. 70 has a little more if I remeber correctly. ALso what suspension are you running? Are you running Disc/ Drum Drum/DRum or DIsc/Disc. Why don't you get a round piece of thick cardboard that is the diameter of your wheels. Then use a small piece of wood that is the width of the tire and slide it back and forth until it fits properly in the wheel well.

Mike