Federal power steering pump pulley

March Performance Power Steering Pulleys 532 summit has the march pully... what's interesting is they say it also fits chevy applications for a federal pump. do you know the back spacing or have one to measure?

try OER?[/QUOTE
The pulley I have now is bent i didnt see it was bent untill i put it on my new pump and back in the car and ran it. I can take it back out an measure it. I looked on oer they don't have anything