Did the 73 Broncos have stock radiator surge tanks on them? I have a 73 that had some front end damage done a few decades back. The radiator was replaced and is too small so it overheats. There hasn't been a surge tank on it since that old radiator was installed. I'm going to replace it with the high efficiency aluminum radiator from TBP and am wondering if I should throw a surge tank in while I'm at it.