What I was trying to imply is if the bullitt cars tach was changed (which I personally don't believe), it probably would have been easier to get a whole dashboard from a Shelby since the car has a deluxe interior rather than taking the dash in the car apart to change the tach. The fact the 120 speedometer is still there would suggest the tach is original to the car. This is my opinion and my opinion only. I do not wish to get into an argument if someone has a different opinion than me. My 68 1\2 also has the 120 trip Speedo & 8000 no redline tach. It is not original to my car but it did come from a 4 speed 68 1/2.