Rim backspacing

[Mikel]

Hello,
What's the backspacing of the stock stamped steel rims found in late 80's-mid 90's SRW F350's?
Thanks,
Mikel

http://photos.ebizautos.com/4337/846654_31.jpg

[Mikel]

Anyone? :(

[71BRONCO71]

i think back then they used to center it at 0. just take it to a tire dealer and they can help with that