While your FRAME may be badged as a Firestone it is actually a Monark DeLuxe frame. Monark built bikes for Firestone back in the day so when Pops went to buy tires for the old Edsel,Junior could beg for a cool new bike.Great starting point for you though...tanks were made for this bike & original parts are plentiful but rising in price as Monarks are becoming more & more popular...I have a half dozen of them or so...If you look on the bottom bracket there should be a small tag riveted to the bottom...post the serial number & we can see what year it is...hope this helps & good luck with your build...Pappy 8)