Thought this might be of interest to someone. Recently, when I had the engine (M25 Universal) in our 86 E32-3 hoisted up (I built a nifty hoisting jig out of 2 X 4s and turnbuckles) to remove my transmission for rebuild I also replaced the Motor Mounts. I chose “Thermoboat” brand which the Seattle Boat Show sales force said were engineered to reduce engine vibration transmission into the boat hull. Sounded good. Although not convinced of just how much reduction of vibration I would realize I installed the 3 recommended drop in replacement “Poly Flex Mounts”. I am very pleased to report that almost all of the engine vibration I used to feel in the cockpit is now gone! Where before, certain engine rpms would rattle this or that, basically now nothing rattles at any rpm and it just feels smoother. I can run at any rpm I choose and it is very smooth. Yes, I can still feel a little engine vibration but I never expected it to be totally smooth. I am happy I did this job. I ended up purchasing the mounts from “The Prop Shop” in Mukilteo, WA (800-634-8318) and they set me back about $100 each. This combined with the 3 blade prop install I did a while back has given me a very smooth motoring boat. I prefer sailing but the wind just isn’t always doing what I want. Spring and summer are coming, yeah.