My boat (not a canal boat, a yacht -- but I used to have live on a canal boat!) has what was described as a Thorycroft 154, ie a BMC 2.2 when I bought it. I had two spare lift pumps on board both the same. The ASAP site lists them as fitting the 154. But my engine has the one ASAP says fits the BMC 1.8. Is it possible that mine is a 154 with a different pump or do people think I actually have the 1.8 no the 2.2? What is the easiest way to tell? The first pic is one of the two spare pumps (I am selling them if you want one!) the second picure is what my pump (sorry for bad quality). The third picture is the pump in the manual for the 154 that came with the boat. The fourth photo is a better pic of teh pump I think I have, notice the mounting holes on the same level not one up one down and priming lever on outer end of pump not the side.