17x9 Cop Car Steelies

Steve Strope has been working on my '71 Scamp for awhile and he just gave me rim dimensions needed for the rear wheels. I spent two weeks looking for 17x9", 5-spoke rims with 5.5" backspacing without success. Keeping in mind the "sleeper look" I'm going for, cop car steelies would look great.

If I can find a company that has 17x9 hoops, they should be able to weld the centers to give me the backspacing needed. Searching websites for Stockton Wheel, Cragar and Wheel Vintiques, none of them seem to make 17's. So my question is, does anyone know of a company that makes a 17x9 steel cop car rim, similar to the 15" rims that came on cop cars in the '60's and '70's?

All suggestions appreciated!!