I, too, agree with Don. I think you are tossing your bucks away on that 302 you have. I understand the need for saving a nickel wherever you can, but ----. For what it will cost you to get the parts and get that engine you have running, you can buy a fully assembled, test run remanufactured crate engine, and will have a few less headaches to mess with in your swap. Same expenditure, better outcome. Also, personally, I wouldn't touch a used marine engine, especially an older one, with a twenty foot pole; and in Alaska, it is sure to have been run in salt water, and most likely seriously corroded inside.