I have a core support out of a 65 GS that I was going to use in my 64. I wanted it so I could put a 4 core rad. in it to cool my new level to TSP 464. I noticed that the grill and headlight holders do not line up and the bottom part sticks out further for the crossflow rad. which I think will affect the grill mounting. Do I need a different grill mount for this? I was thinking of cutting the bottom rad support and welding it to the old one. Anybody have an thoughts? Thanks for any advise.