I have a 1940 KA10 Johnson motor, Serial Number 872563 , It needs one part fixed. But other than that it runs great after a tune up. The throttle is the part that needs to be fix. Anyway. I was wondering what the value is of this motor. I want to see if it is worth enough to use as a trade for a hard top pop up tow behind camper. And clue from anyone. It would be great appreciated. Thanks.. Shad.