69 340 Swinger overflow tank

My '67 New Yorker and '68 GTX have no bottles. They just have a rubber hose running from the radiator cap neck, across the top of the radiator, and down the passenger side of the radiator, dumping onto the ground. My '68 Barracuda has the same set-up, but the previous owner half-assed installed a bottle on the passenger side fender. I will replace that with a better-looking bottle.