I need a new wiring harness and crankcase or whole engine for my 1984 Honda nighthawk 650 and would also like to know the towing capacity rating for this bike because I´m building a barebones camping /survival trailer for this bike and need to know what weight I should stop at and also what parts can I use to enhance the performance of the bike to make it haul better because I have on road off road tires front and back for going camping in remote locations so suspension upgrades and performance and a need for it