I'm building a crop cart also know as Asparagus Harvester. You can find them on You Tube, it has two electric motors to drive and for steering with foot controls. I am going to need: motors, controls, foot throttles, wheel assemblies with sprockets, breaks and axles. Knobby tire, as it will be used in a garden application. I am looking for your expertise in compatibility with everything. The motor used needs to go 0 - 10 mph. I would like to have the motor mounting plates as well.