What a terrible product to work with. It is a sprayable asphalt. Says you should not reduce it, but I have to to get my 1950s undercoating gun to spray it, and it does not spray uniform at that. It takes a loooonnnnggggg time to cure too. Like days of siting in the sun and heat.
The good is that it looks great, and seems to have done what I want it to. I have the hood and inner fender wells done. Will get the fenders done when I yank the rears off.