I've been meticulously refurbishing my 1957 Evinrude Big Twin 35 and I seem to have hit a bump in the road. It's a model 85028. While I know that year didn't come outfitted with a starter motor and bracket, they can be put on, as mine is equipped as such. The starter it came to me with is an Autolite MAK 4033M 5K and it passed away many years ago so I stopped using the boat, but I kept the starter for reference. Since I've been restoring her, my wife thought it would make a nice Christmas present to get me a new starter, so she asked me what I needed. I looked up the nearest year that model had electric start (1958) on Marine Engine dot com and came up with the ARCO 5376. The problem is I don't know how this is supposed to fit. The original (to me) starter is approx 3" diameter while the new ARCO is about 2 1/4" It has the same number of teeth in the gear that engages the flywheel, but I don't understand how I'm supposed to make it fit the bracket.