Installation of Alternator on a Model A

[A-Man]

I am slowly converting my 1930 CCPU to a 12 Volt system. I have all the wires run. Today, I removed the generator, and installed the alternator. I purchased the Alternator support arm from O’Reillys, part # 9581(See 1st Thumbnail). Looking at the 2nd Thumbnail, a picture of an someone's alternator installed, I am trying to determine where the other end of the support arm is connected to the engine? Considering that the support arm is attached to the front of the top “ear” on the alternator, it appears the other end is secured to maybe the right front motor mount bolt?

Where have others attached the support arm to the engine?


What is the correct belt to be used: NAPA 2522434/GATES TR22434 Belt (11/16” X 44”) or a NAPA 2520426/GATES TR20426 Belt (11/16" X 42.99")?

Thanks.