I have this carb laying around, and thought about using it on my 37. The motor is a stock 1979 360, out of a motor home, with 57,000 miles. I believe the carb is a 700 double pumper, but I think it has the wrong bowls on it. I have never rebuilt a carb, would this be a good one to start on? Is the 700 to big for my motor? Should I leave the factory carter carb on it? I am not looking for more hp, just a good running motor. Will it wreck gas mileage a lot?