The truck is a '66 C50.
Bleeding was performed with me pumping the peda, putting a big rock on it and then cracking the bleeder on the slave cylinder. I repeated that process around the truck.
ive tried using a stick by myself with limited results. i made a homemade pressure bleeder with mixed results and a hand vacuum pump with no results. for me the proven way with the best results was with two people. one that knows how to pump up the brakes and apply the pressure and the other one that knows how to work the bleeders with total communication between both parties and of coarse with the sequence used as stated in the maintenance manual.