We forgot to tell you one important aspect..........you don't mount the radiator solely by the base, you also need some support rods. Either run one on each side from the top section of the radiator to the firewall, or on an angle down to the frame. You need to fab up something that will clear your engine but act as a support for the top of the radiator.

I had to make my rods intersect the radiator about mid way up and go to the firewall. Every car is different.

Don