Somebody in Norway has been tacking bravery pills, they have tuned a Yanmar 6LP to 370 hp!! for use with a Bravo 3x.
They say they have tweaked the torque curve so as not to over stress the drive but as it is overstressed as standard I really would not like to be an after sales manager for these guys.
Apart from that the RIB28 looks cracking
http://www.goldfishboat.com/ and click on DMAX