Hi, I've been trying to find out if POR15 gray manifold paint is any good and if it can be used without totally cleaning off the rust. Apparently, sandblasting is required for long-lasting results. Since POR means "paint over rust", this is kind of misleading. Now my question, since sandblasting is necessary anyway, is "what kinds of header paint have you all used and what would you recommend"? Thanks, George Clineman [Non-text portions of this message have been removed]