I may have misunderstood the application here. If we are talking about the Merc Racing Scorpion engine, yes it has forged pistons, rods and crankshaft and it should be strong enough for some supercharging. Just be careful to get a good system like the Whipple and the associated reprogramming and dial in on the ECM and fuel system to prevent a burn down under boost. This supercharging will still shorten engine hour life and it may hurt resale on the boat if you plan on reselling it in the future. Most general performance boaters have a resonable based fear of supercharged engines on purchasing used boats equipped with same. Just some extra thought here, look be fore you leap.
Yes Jayhawk261, I talk and work regularly with Trey and John at Mahle. Rings lots of good bells! We have been working with them for many years now and they build all the beautiful forged pistons we have designed with them for the 496 engine and even our new LSM550 engines.
Trey and all the guys at Mahle are great people to work with and their products are without question the finest in the marketplace!