Just picked this up. I think its cool as hell. Ive never seen one and suspect there pretty rare. You can use it for gas or oil. We will definetly use it on the Comet.
I own a pair of these...a litle different, as they state they are for racing......have both (RF2 & RF3) filter cartridges also....here is some pics....came from an ex AAR engine builder's estate.