Hi marchese. Welcome to iboats. I used to have a '66 33 hp. Great old motors. Have you seen this motor run recently, or are you trying to bring it back to life? As far as getting her to start, try spraying a little fuel/oil mix into each cylinder prior to starting. You should be using 50:1 if it's a '68, but a lot of folks run 24:1 to give a little extra lubrication, especially if the motor's been sitting a while. Here are some great links that can get you going and walk you through an entire tune up of your motor. You can get virtually nay parts you may need right here at iboats. You should be able to get her running like new for less than $100. Holler if you get stuck.