Re: 1960 Mercury Kiekhaefer 400
Actually, you can use a through-hub exhaust prop on your motor. Get one for a 1960s Merc 35 or 50 hp. Not a perfect solution, but they work... Might have to play around with a spacer or thrust washer to make it fit properly, but I have done it in a pinch... It'll get you back on the water until the correct prop comes along...
- Scott