carb.?

i came up with #2531915 for the intake, 1969 340, and what is 08107? the carb i bet is a 1406 600 cfm eddy carb. a thermoquad is not designed for that manifold. they came out in 1971. if you are running the 4 hole and all 4 barrels open up, then you are fine. is it the 4 hole adapter that adjust the 2 different hole sizes or just a 4 hole spacer?