try speedway motors.

with a 3x1 intake you can just have the two out board carbs for show if the motor is stock. if you do the exhaust and a little head work run the two out board carbs and a dummie in the middle or a block off plate. then if you add a cam. and a rear you can go for all three. a lot of versitly and tunning in just one intake and some carbes.