Projectquick

I plan on leaving for the track in about two hours and I need a suitable overflow substitute. I have heard that the track I'm going to isn't to strict with what you have but I was looking for a little something other than a coffee can. Anybody know of a decent substitute that can be found in two hours and will hold up and be useful if so needed?

brentloftis

Pepboys and autozone sell a universal overflow tank pretty cheap. You are talking about coolant overflow right?