[McGillicuddy]

Welcome aboard, bashepard.
Being that you are a recent member I might suggest that you copy and post the picture from that CL ad rather than the ad itself. Posting others ads potentially hurts those who have paid for listing their boats here and an administrator may delete your post on those grounds.

That being said, it looks like a 25" transom. But you could cut it down. It looks like it already has a splash well wall... You might want to check with Bay Mfg to see if they make a shaft extension kit for your motor. I'd rather extend the shaft than cut down the transom.

I think I've seen that boat on the board... I'd snap it up. Hard to find a nice 18.