Quote:
Originally Posted by Mike C
I'm not trying to hijack his thread with general backspace talk, just find out what his is. I think this is a great combo for a shorty and want to steal.  I have a '69 short step Chevy with leafs and am planning on keeping the 6 lug wheels, but I am going to buy the Summit truck rallys and want to see if his backspacing jives with what they sell. Which is 4" for the 8 and 4.25" for the 7. If not, I will look into buying Wheel Vintiques which has different backspacing options and so does US Wheel.
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To answer
your specific question,... his specs are these:
15x8 (3-5/8" BS)
15x7 (4" BS)
You will have a tough time trying to run any 15" wheel up front with more than a 4" BS. (4" will require grinding on the lower a-arms)