Bolts right in place of the heavy old clutch motor. Everything provided in the kit. I swapped pulleys to the smaller one (included). Lot's of confusion on speed in the various reviews. Speed is either off or 400 and up. Unfortunately it won't crawl at 100 or 200. The starting speed is a brisk 400 rpm and can increase as you press farther down on the pedal. The speed setting is the limit only. Set it for 1000 and it will go from 0 to 400 then increase up to the 1000 max you set. Otherwise it works great and a huge improvement I should have done earlier.