When I purchased my engine, I thought I was getting a 235. It turned out to be a 261 with an 848 head. It had the starter, bell housing, water pump, carb and everything. It just slipped into the engine bay, no issues. The only minor thing was to put a larger pulley on the water pump, no relocation issues. I am quite happy with the performance, 20 mpg is a bonus.
20 mpg?? What differential ratio / transmission are you using?
John