I bought this Melling M50 oilpump for my 354, I decided to go with the Hot Heads 340 pump kit. The M50 requires some modification to make it fit, there are threads on the Hamb that show how to do it, to be honest, it might be easier than the Hot Heads pump conversion. The pump is brand new, threaded for stock pickup, the original box is missing. $100 plus the shipping expense. T hanks, Oj