Help<br /><br />I have a Tohatsu M70A2 70hp (old Engine) but she runs like the wind. I also have a Speedo that is fit to the Transom and a Sender unit (works off a Vacume, I Think) but I have been told The Tohatsu has a opening in the Gearbox made for this Speedo Tube. I can't find one in mine...