If you are looking for a another engine, why not a 261 instead. Pretty much everything is interchangeable with the 235. I had one (bought the rebuilt block
from Tom Langdon) and used my 235 stuff including the 848 head. Added dual carbs, exhaust and HEI. It was a great running engine with good power.
However, I doubt it will be as cheap as a 235 (both are great engines).
don
