I got a hell of a deal on a champion radiator for a 1998 Chevy k3500 and from what I could tell the radiator supports seem to be the same size it’s just a larger cutout. I’ve got a 1999 Yukon OBS with the 350 inside of it and it’s my off road toy but she keeps overheating. I’d like to know if this swap from the small block radiator to big block radiator would be possible. (And apologies if this isn’t the right area for This question. This is my first post )