My 6 pak Bird caught fire in 1975 from a fuel leak that caused fuel to collect under the manifold and ignite. Check your hood carefully, it might be warped (mine was), very difficult to see until you paint it and you see it is wavy, alert your body man to look for this, also check your fender scoops,the rear edge of the fender scoop will droop, they are only plastic and it doesn't take a lot of heat to start deforming.