I'm buliding a 235 to go back in my 51 3100. What I have learned the hard way is that all 235's are not the same. This block has a Chevy parts number of 3764476 which I understand makes it a 56-62 engine. The oil pump screen, tube and pipe from pump to block from my 54 "parts" engine do not work on the newer project. Any thoughts on how I can retro-fit or where I can find replacement parts that will fit? Can I still use the 54 pan?