I see the Ranger overdrive goes on the front of the sm420 tranny, but it would require moving the sm420 back to the seat or there abouts. I have a chev car overdrive. Does anyone make an adapter to attach the car overdrive to the back of my sm 420? Or, can someone tell me how to make it myself. I have access to a guy in a machine shop. Also, which overdrive is best? Thanks - Scott
