I am getting ready to apply the proper color primer to the chassis of My '67 GTX conv,now on the rotisserie,which was black.Questions are:was the Chassis dipped in a tank for the black E coat or was that sprayed on,was the seam sealer covered by a sprayed on primer coat before the color coat,and what do You recommend regards the proper sound deadener for the inside of the quarter panels and inside wheel wells???