Serial 0D212803

I went fishing last weekend and the temp was 22 when we put in. I started the engine and let it idle 10 minutes or better. The fast idle throttle worked just fine. I pulled it back to neutral and went to put it in reverse and it was kinda stiff. Got it off trailer and put in forward and would hardly go in. Got it to go and then it was stuck in forward. Thought maybe the cable was just frozen or something but when I got home and pulled it apart this is what I found. The casing had actually cracked.

First off, what do I use to try to find a replacement? There are some numbers on it but nothing specific that I noticed. Do I just go by serial/year model of engine?

Second, would it be acceptable to utalize a used one? Just a quick search online showed these over $200 for new. Would you possibly have one laying around that you took out of a boat?

Thanks for any help