If you have a 235 and it is the 1954 model, you can either use the Rochester (made for the 235) or you could do much better with either a Carter 2100s (manual choke) or a Carter 2101s (automatic choke). The Carter (or the Rochester) made for the 216 could be used if you use the 216 manifold on your 235, but either of those were designed specifically for a lower power engine and won't exactly shine on the 235. Good luck.