How old is to old?

[jimmyboi082]

I have a 66 chevy short bed with original 6 lugs still. I picked it up 7 months ago. scince then I've droped a 350 in it and had the body worked done on it not car show quality but enough to question if it's still the same truck it was really bad before. well I'm now on the brakes and i want to keep it drums for now I took the front drums off and noticed that the shoes look brand new. Still has a lot of material on them with no cracks and the wheel cylinders show no signs of leaks. the truck has been siting for about almost 20 years. Should I change the brakes and the wheel cylinders or just clean them down with brake cleaner and turn the drums.