Those brakes are very early. Bill Erickson’s 37 had them, Jim Lokai’s 37 had the newer style. The tank is correct for 37. I don’t know what a 1936 had for a tank as I’ve never seen one. It is definitely not a 1935, as they had a slab sided tank. It’s too bad the engine is missing as the rest of the parts could be fabricated.
Take a couple pictures of the whole bike so we can get a better overview. I’ll post them if you can’t.