Ok man I see what ur saying,the BW is what we call a Coaxial transmission rather than a drop down where the output is below the centerline of the crank by about 4 inches or so.
The damper you have in your BW trans,we call that a torsional coupling,on bigger transmissions it is either rubber or silicone.
But you probly dont need all this info,anyway good luck with your boat.
Its a nice one!
Most people dont realize just how much horsepower it takes to push a boat to 50MPH a 72 footer with a pair of 2000 series MTU engines is about 45 MPH at WOT at about 160 gallons an hour total fuel consumption.
ZF Marine bought my company out in 2000 n im long gone from there.
I still however work on go fast boats with big Diesels.