How to 360?

If I were you, I'd sell the LD340, and pick up a '73 stock TQ intake. Your buget will improve, and you won't loose performance wise. Your 650 double pump will work fine. Use the headers you already have, and try to find some good inexpensive pistons from another hot rod guy; I see them for sale all the time. Then pick up a cam, and windage tray. I had a great Racer Brown cam in my T/A 340, that I intend to use again. Budget is blown, but move to the rear gear after that.