Yeah, I just replaced my original 300 engine that came with my 67 skylark with a 430 engine. Now I am having trouble trying to find a radiator that works with it. The biggest radiator that can fit can't be more than 17" x 20 & 2/3" x 2" and it needs to have more than one core. If anyone knows any recommendations or has one available, please let me know. Thanks!