So to be clear (bear with me) If I swap the rooster comb from the 75 904 into the 68 727, I will have reverse lights, and the car will not start in gear.
Yes, as long as you use the 3-prong NSS and wire it correctly. Along with the rooster comb you will need the end plate from the '75 (see pic below) to limit the travel. Elongate one screw hole.
What 40 mph limit function are you referring to? Thank you!
The '71-later PTK module has a limit valve to prevent PTK above 40 mph, this valve is ineffective on earlier VB's so you may get PTK above 40 mph.
