Jim Day "Mr. Buick" in northern California got everything modern for his '57 Caballero by sitting the '57 body on the frame from a '79 Century wagon. It has disc brakes, modern front end geometry, and parts are readily available. Probably shares the frame with Cutlass, Lemans, and Chevelle. Same wheelbase and tread. You'll just have to put in motor mounts. Jim runs a 340 hp 425 backed up by a TH400 Transmission. If you google 'Jim Day Caballero' you can see pictures and read about it.
Ed
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