I started by installing the starter previously used on this engine: one salvaged from a Honda Civic. It came with a custom mounting bracket milled from heavy aluminum stock, but the fit was not perfect, and at full extension the starter gear engages only half the surface of the ring gear. I was happy when another Cozy builder had a spare starter and took him up on the offer. It's "new old stock", meaning its been on his shelf for years. It's an ElectroSystems MZ-6222, which became part of Kelly Aerospace, then Hartzell. It has a 12/14 gear pitch, the one I need for my 149 tooth ring gear. This model starter is the same one used on the Mooney M20J, the original installation of the Cozy engine.

One bit of good news - using aircraft starter and B&C alternator means I was able to make a good fit for the reinforcing link between the two. Now to find the correct bolt! 5/16x1.25 - 18, drilled head. Add it to my SnF shopping list.