What carb for my 340 build?

No I'll only have the car on the road from May through to the end of September. They don't clean the sand off the roads from winter until mid April and October is to hit and miss to keep the car insured so no the car will only be fair weather driven.
That's exactly what I used to do. But in the off-season I stuffed a 318 into it and still had a lotta lotta winter fun.