I have a streetmaster on a DD 318 & even tho it has very small ports/plenum it is a single plane & wondering if a SP2P or an Offy dual port would better enough to search for one (Scratchn highly recommended the offy so I'm going to find one) but after incredibly poor mileage from it (speedo is inop) I found one of the Adel type clamps on the alum fuel line, the edge of the inner neoprene insert in the ID of it had shifted & the metal outer band had rubbed a hole in the line and the only way I caught it is it got to where I smelled the gas. I just bought headers/pistons and a Moped to ride to work while I rebuilt it