Need info. on outboard bracket

[StregaP51]

I'm looking at an 03 Sea Craft. It has an 03 yam 250 2S 800 hrs. The boat needs
some interior work gunnel pads. The asking price is $26K. which doesn't seem bad but it has no T Top and I don't like the big opening at the transom. I think the Sea Crafts look great with a closed transom and outboard bracket.
So back to my question. I assume it's easier to add one to an I/O.

Thank ahead for any info.