I have a 65 El Camino sitting on a 65 Skylark GS frame. Most everything fits fine, but the radiator. The person who put this thing together put the GS crossflow in the El Camino radiator support, but the upper radiator holddown he fabricated doesn't work. I am wondering if I could put the tanks off a Riviera on a Chevelle downflow radiator core, thus having the correct inlet and outlet for the nailhead engine. I have a Chevelle radiator, but I don't have the radiator dimensions for a Riviera. If you have a Riviera radiator handy, but you please send me the measurements, especially the tanks? All help appreciated,
