Its a later rochester 2gc. Id say mid 70's.Yup it's a 2 barrel for sure. I called NAPA w/the carb# and they did confirm it was a Rochester.
I've never rebuilt a carb before, how difficult is it??
Then all you need is a plate with a hole in it and a push rod, You can get these off a 262, 265, 267, 283, 302, 305, 307, 327, 350 or 400 55-86It looks like there is a place w/a plate on it to cover up the spot for a manual pump on top of the engine near the carb.