If VVT = variable valve timing, the GM 6.0L marine does have it.
http://www.gm.com/explore/technology...LY6_Marine.pdf

How about the Raylar stroker?
http://www.raylarengine.com/550_engine.html
It looks like a modified Vette engine.

No kidding! I hadn't read the '08 specs. Oooof...I wonder how long before, or IF, the aftermarket will tackle making a cam for that system. And it sure won't be cheap. I have to say the curves on that motor just don't look marine friendly.

Raylar's piece will be unique. It's great that they're tackling it, but at an estimated price of $20k, it doesn't appeal to the mass market.

Last I checked the 350 Mag MPI was in the low $6,000 area ($6,200) rings a bell. The 6.2 is about a grand more than that and even though on the surface only looks like 20HP, it's a much beefier and more powerful engine.

The real deal is the 6.2 repower package. comes with basically everything you need to repower, including the drive and related components. Bravo 1 package is about $12k, Bravo 3 package is about $12.5k

The pricing you are referring to is for remanufactured engines and drives.
A new 320HP 6.2L Bravo I is like $20,000... the 350MagMPI Bravo I is 17K.
http://www.mercruiserparts.com/mercr...ive_engine.asp

My Ski Nautique has the 6.0 L P.C.M. Motor in it. They rate it at 375 hp. Great motor but seems to not really have much more low end torque than the 5.7. Runs smooth as a Swiss watch though. I believe there was an A.M.T. cat that had these motors and ran very well!