I will second (or third) the motion on the 8.7 and the problem with water intrusion via the portlights. I have had an 8.7 and two 8.3s over the years here in Maryland and that was the common issue. One had the Volvo and two had A4s. I ended up putting an outboard bracket on one 8.3 while I was working on the A4. I always had good luck with the A4 in general.
Mariner 28 "Sweet Pea"