Wow,Bill ! That's the set-up! I didn't even know that was an available accessory in'55. Back-up's a bolt-on tab,on the shifter. Thought it was welded. I learned how to drive,in my friend's '66 G.M.C.,but that was back in'69,so don't remember how the unit was attached,except for the button on the trans pan. THANKS!!
