On my 63 I use the stock type setup and added a pusher fan in front of the rad. My stock setup works good but if stuck in traffic for about a 1/2 hr or so it creeps up to 200 which I don't like. So I have the pusher fan on a toggle switch and I can turn it on just when needed. It will bring it back to about 185 to 190 and hold it there which is ok for me. Ron