This is our exclusive K&D variable speed GM wiper system. You get the new variable speed GM motor, new rack, new rack tubes, and new wiper switch which is modified to fit your existing Jensen wipe/wash knob. Please specify when ordering whether you have a vinyl dash or wood dash. If you are fussy about originality, the GM motor will fit right behind the original. Best time to fit this new system is when the engine is out. Why take the engine out? You take a good hard look at your where your wiper rack tubes and wheel boxes live and ask yourself the same question.