I have a Pro Deep V-16 with the factory 40 Mariner/Mercury 2 smoker on it. No issues and it really does not have many hours on it.
I have a line on a newish 40 Honda 4 stroke that is also low hours that I can get quite cheap. Worth the swap? I do not need more motor so the size should be fine.
I will be trying out the Honda this week on a nearby lake while it is still on his boat.