my 67 flatbed wont stop

[luke_blp]

Hi im luke and need help finding a way to upgrade my brakes it still has the 4 original drum brakes and sorta slows down!
A little history when i got the truck its prievius owner had left it parked for 10 year on his property in oregon .
That was 16 years ago and this truck is a miracle turn the key and the old 292 fires right up, it is very rusty so i dont dream of perfect restoration just trying to keep it on the road
Thanks