This listing is for 1 NOS big block 427 radiator support Gr. 1270 # 3884597 that the GM book say's is for 1966 and 1967 427.  I think this support is WO/ AIR. Support was in a old inventory and will need painted.  The deminsion between the the radiator support mounts is 22 1/2 in. These supports are very heavy.   Shipping price is to the lower 48 states.     KEEP me in your favorites because there will be 100's of new parts being put on..    LOOK at my other Corvette parts in my E BAY  store   thanks john  Table # 3