How about a Rochester 2GC two barrel as used on many GM tri-power manifolds and 2V V8s. I use one on my Model A tub 302ci (with 2 dummy carbs to simulate tri-power and it works GREAT). I think I paid five bucks for it at a swap meet. A 1V-to-2V adaptor would put you in business. I would also think about opening up the opening of the stock intake when you make the swap. Good luck.
