68 Cuda Max radiator size ?
I have a 67 with a 440, I went with a BeCool radiator and dual 11 inch fans in a shroud. I was a bit pricey but totally took care of the issue. The set up was for an A body, no trimming needed, just drill a hole in each frame rail for the lower mounting to set in. BeCool offered it in a complete package. I can get you the part #'s if interested.
You can see pictures of it in my photo gallery.