Fairbanksak : What you showed pictures of it called the Driven half of the system and tote goat used a speed sensitive design that reacts to speed changes not torque changes from the engine this gives you the braking effect upon throttle closure so you don't free wheel.
I guess you need to know first the belt width at the top of the closed pulleys and you will need a driver clutch to fit the crank shaft of the engine you are going to use. And with the engine in place an accurate center to center measurement so a belt can be bought.
And your system is symmetrical in design so a comet 20 series drive is the best choice.
Finding an original Tote Gote driver is a challenge and are usually left on the engine hen it was pulled out of the bike.
Steve