The stainless steel heat plate goes against the base of the carburetor. The gasket goes between the plate and the intake manifold. This a nice gasket. The last picture shows the Felpro gasket (grey) on top of the BEST gasket (red).
NOS 264 322 364 401 425 Buick Nailhead Carburetor Dash Pot & 215 / 300 Engine
1957-1966 Buick Nailhead 364 401 425 V8 Engine Intake Manifold Gaskets Seal Set
NEW Water Pump 1959-1961 Buick 364 401 V8 59 60 61 LeSabre Invicta Electra
364 401 425 Buick Nailhead Carburetor Gasket & Heat Plate Baffle 57 - 66 Carter
Buick Nailhead 364 401 425 Intake Manifold Gasket 57 58 59 60 61 62 63 64 65 66
364 401 425 Buick Nailhead Timing Cover Bolts 57 58 59 60 61 62 63 64 65 66 NEW