Has anyone repowered their boat with a larger engine/ hp?

I have a 89 Carver Montego that I have been restoring. \
The boat sat in a farmers field for over 7 years.

I put it in the water once 2 years ago, then the original Mercrusier 260 5.0 died.
One Mechanic told me it was a cracked block.
It didn't even turn when wrenching it... so it is completely seized.

Its taken me some time to find an engine.

I found a 7.4L 310/330 hp for a great price.
I have not been able to find a 260. and to be honest I wanted to put something in with a little more HP

From my understanding this larger engine was an option engine on these boats in the late 80s early 90s.

Has anyone put one of these into their Carvers?

What challenges did you incur ?

Im told the engine will or should drop right in on existing mounts because it was an option engine