I am sure this is beat to death but Mia Copa. I want to put a Sun 40's tach or a football tach in my Hop Up. I dig the bakelite and the football. i will have a 8BA in a 32 i might add. I am also hoping to finish the Model B and play with it as well. i have seen alot of information on the here and some conflicting. what goes with what? Could anyone explain, tell or direct me to place that breaks down or is a legend to the vintage Sun tach model #'s and what they work with? Go Hambers' Feel free to look up Sparkle City Speed Shop on instagram to see the progress of the project 32. Thanks in advance for any help..BTW, be nice, mean people suck..right?