Got a '67 Coronet with a 440 and an aftermarket aluminum rad. The previous owner added a 473 ml Mountain Dew bottle for an overflow and it's not quite cutting it.
It doesn't look like there a factory one (didn't pop up after a Google search)so I'm wondering what guys have been using. Would prefer a plastic bottle type, not really into the aluminum look. Don't care what it's off of, if one off of a Yugo will work and doesn't look like hell, I'll use it. Also not afraid of doing some fabricating. So any recommendations?