I bent my own. No other option for 1965. 5/16" tubing, I recall. I bought a 25 ft coil off ebay and used for fuel too. I first bent a stiff wire to shape to use as a guide. I know jomopar said one wrong bend and you scrapped it, but I re-bent mine several times as I kept screwing up. The tubing is pretty flexible. But if you kink it, start over. You make a regular flare, so any cheap flaring tool would work, but better to buy a dbl flare for brake lines too. The only tricky bends are coming tight around the engine/tranny interface. No issue running rubber hose, since they do that in my minivans. However, rubber is more expensive than tubing, you would have to support it, and less reliable. I bypassed my radiator and use only a separate cooler.