I am restoring my 68 Z and had new floor pans and trunk floor installed. I am finishing the underside and will be painting shortly. A friend suggested using Extreme Chassis Black paint from Eastwood company. I had the car media blasted a few months ago and primed with 2 part epoxy primer and did my finish work on top of that. Would it be in the correct direction to paint the underside of the car, the rear axle, springs, firewall, core support, subframe, inner fenders, and front suspension with the same satin paint? I know the original would have had overspray underneath just as the firewall would have overspray from body color and cowl area would have overspray from the stripes being painted on the car. I want to be correct.....but not "that correct" if that makes any sense. Also, has anyone used the Eastwood product? I know I will have to sand my primer now because it has passed its window, but do I need to reprime over it or can I spray paint over it? Do I need to buy Eastwood's chassis paint kit with their primer or will any primer do? Their standard kit comes with 2 quarts of Extreme Chassis Black paint and 1 quart of primer. Is that enough for the job? Any adivice would be helpful.