We have moved those nubs 3 times for customers! I don't like to make excuses but that is almost 60 year old car. I'm afraid that the corvette radiator will always be a problem because of the precise size of those nubs. As far as the thickness of the radiator, that's a trade off for performance. Our unit is the largest aluminum 2 row made. Again, not making excuses but the corvette radiators are all very tight squeezes with little room for even the slightest tolerance.
