Got the starter this afternoon and pulled the cherry picker out to lift the rear of the engine. Got the old starter out and fit up the new one. Lowered the engine and guess what was sitting on the hull? Yup, the bolt head. Needed to make a little modification, and this is just another instance where I needed a mill. Relieved the mounting block to clear a socket head (from the old starter... now I know why they did that), bolted it back up and it looks like it was made for it.
Got it re-assembled and decided to light it off to test it. HOLY SHIT! This thing spins FAST now..... like it's a 8:1 motor not 12:1. Woulda started easier if I had remembered to remove the scoop and collector covers first, but it was fun watching them shoot across the yard.
Just a few little things left to do before it gets wet. Should be 99% done Sunday afternoon. Oh, and it's time to start looking for a mill.....