I figured I'd post here since you guys know me better and there isn't much traffic in the 1st gen side of the forums. I was out poking around on my wife's 67 today. Decided to pull the "battery box" (code for a chunk of sheet metal shaped like an L). Found rot in the core support and inner fender. I'm not terribly surprised as this is a problem area for 1st gen Mustangs, plus the hackneyed battery box kind tipped me off. Good news is once I removed the monstrosity of a battery holder I found I could fit the spare aluminum radiator I had into the car to replace the corroded to bits brass rad that was in it.