Meh. I see Ward's comments, and they are valid. And I see what he's saying. It looks like there is definitely a homegrown wood adaptor between the motor mount, and the original fiberglass wedge which would have accommodated the narrower 2 stroke mount that the boat shipped with.
From what I can see, it looks like the homegrown wood spacer is beefy, with a 2x8 blocked out on a 4x4. I don't know that I would worry much about it, other than it looks kinda ugly. I'd be inclined to make a new wedge to replace the adaptor and the fiberglass wedge, but, as Ward says, is wide enough to mount the motor. Proper backing inside the transom would be key here as well. That is, if the PO's adaptor looked wobbly or was particularly annoyingly ugly to me…


That SS Garelick motor mount, with it's wider spacing, should be plenty strong to resist the dreaded 4 stroke torque. Personally, I think the lifting handle on the Garelick is woefully poorly engineered. Garhauer makes a far nicer mount, with a much nicer lifting handle. Sage Marine uses them on the Sage 17. I haven't found it in the Garhauer on-line catalog, but I hear Garhauer is a very easy company to deal with, so I'd contact them directly next time I need a new bracket.
For the record, I have a 5hp 4 stroke on my boat, using the original aluminum 2 stroke bracket. I see no evidence I should worry about the torque from my motor, and I also put a high thrust prop on it. In my experience with my setup, that whole 4 stroke vs. 2 stroke torque thing is a myth. On the other hand, 4 stroke engines are heavier than 2 stroke, so I tend to believe that's a factor more than anything. Considering most of us are using smaller motors than the max the boats are rated for, most of us are well within force parameters.
That being said, I don't drive down the road with the motor on my bracket, and yes, the bracket does seem to have more side to side play in the system than I'd like to see. I'll have to suck it up and replace it at some point….