Rumblefish. You're ok. I knew what you meant. We all broke the rules by jumping on a sales ads but I saw a new member sending a newer member a pm and I thought the same as S/scamp and that the chambers didn't match. Sport
These heads are listed on e-bay item #140526089. Better zoom on e-bay makes it look like 1 closed and 1 open. Look at the space between the chambers and the bolt holes at the top of the photos. Sport