I have a question in regards to corvettes that were drag raced in the mid to late 60's. did they keep the independent rear suspension or was it common to switch over to a solid rear axle? I guess I just haven't seen a bunch of under carriage pictures but it seems that maybe a solid rear axles would be a logical upgrade for going straight but then maybe it was easier to work on what came from the factory. Drag experts please enlighten me .