The Europa GB’s are sedans, not much different than the convertible he already has. Resist the temptation to add enclosures and vertical windage, it will kill the utility of the boat in close quarters and docking. The hardest transition from Convertible to Pilothouse is to make your lower helm the primary helm, run it from there 80% of the time. Resist the temptation to enclose the Upper Helm, keep a soft Bimini only, reduce windage aloft. Cat 3208 rated at 375hp have a large following and are durable at that power rating. If you are slowing down in your boating use, you are probably not going to be putting to much hours on this setup every year. Any reason why you are leaning towards the 42 vs the 46 GB?