I have a 6'-0" long tail lower unit that I'm trying to attach to a 20 hp Honda. Need a universal joint to connect the motor to the shaft. Can anyone help with a resource? I tried Go Devil but they wont sell me any parts because it's a knock off of Go-Devil. Also need a resource for shaft seals & bearings. I have mechanical experience but must admit I've never tackled on of these beast before so any advice would be greatly appreciated.

Go to your auto parts store and ask for a PTO yoke for a 1 inch shaft and a 3/4" shaft. Also ask for the ujoint to connect them. Pretty much every u joint mfc labels their pto u joints as "1000" series

It's simple. get a mud motor. shoot ducks in the face.

For your bearings, depending on what kind of bearing were used to build yours, mcmaster-carr has almost everything. Don't by ujoint or yokes from there. They don't have what you need.

It's simple. get a mud motor. shoot ducks in the face.