I am on the hunt for a 41 to 49 235 to do a full oil pressure conversion so I wont have to fake the 216 look,since my present 235 has been making noises for a few years I hope it can last a couple more until I find all the parts to build the early 235 to the way I like it. If it does not last I might stick in a 216 for a temporary motor if I can find a nice one and see how I like it and you never know it might stay.