64 GTO/65 Skylark Frame Interchange?

Could someone advise as to whether a 65 Buick Skyark frame is a direct interchange with a 64 GTO? Both cars are convertibles, both frames boxed.

Thanks in advance.

Allan

 

yes..64-66 skylark tempest interchange..olds cutlas 64-65..chevelle NO..it too short
66-7 cutl*** the frame horns are wider in the front for the crossflow radiator

64 GTOs have a heavy duty frame, so if its concourse it has visual diff..stuff is beefier here and there, but its a swap that works