Otto, if you will consider a 17, then I would look for a mid-'90s Four Winns Unlimited 17.
These were 17' runabouts stuffed with a 190 HP IO.
They also made a 19, here's a '96 in Mayville, NY:
http://adcache.boattraderonline.com/6/3/6/47583136.htm Is that near you? This one has a 350 in it!