Backspacing on Stock 15x7 Rally Wheels?

[RB401]

Does anyone know what the backspacing on the 15x7 AMC rally wheels used on '71-'74 Javelin's was?

I want to put a set of 15x7 wheels on my '73 Javelin (currently has the 14" rally wheels). It would appear that any backspacing from about 3.75" to 4.5" would work. However, I would like to know what the factory 15x7 wheel was for a reference.

[WWI Flying Ace]

Does anybody know the answer to this question? I need to know for my 73 also...hoping to order aftermarket Foose wheels but need to know the sizing...

[Big Bad AMX]

I can't say what it is exactly but I believe the factory wheels were 3 3/4".


.