no i ordered away for it. It's been so long and i don't have the receipt but regardless it looks just like this critter:
http://www.classicperform.com/Store/...ods/PVKU-4.htm
IIRC there is a valve and spring under the black boot that a guy can remove or tinker with that switches this prop valve from disk/drum to disk/disk capable. But I gota do my homework yet before i go monkeying with mine since i lost that receipt and there is not a part number on mine.