Hello, I have a question about the Airguide tach the model is retro Tachometer reads to 7,000-rpm for all 4-, 6-, and 8-cylinder inboard and outboard gas engines. I have a 1979 evinrude 55hp will this model work for me?? Hear is the link if you want to look at it. <br />THE LINK IS UP DATED AND...