Jerry - how about fabbing an intake to use 3 of the Carter type YH carbs. The Corvette versions are out of sight price-wise, but the Dearborn Marine versions, while not cheap, are at least reasonable in price; and they come with automatic (hot air) chokes. And since Dearborn used two of them on a 312, I am certain they would flow well enough for the Atlas engine.

You could convince the uninformed that you have a 235 with the Corvette package that you upgraded to auto choke! wink

Jon.

Good carburetion is fuelish hot air
The most expensive carburetor is the wrong one you attempt to modify.
If you truly believe "one size fits all," try walking a mile in your spouse's shoes!
The Carburetor Shop