What is or was the relationship between these two? Are they the same, or did someone buy the molds? They are killer looking boats and I am curious as to who's who.

John Cosker founded Mystic powerboats and primarly did design/engineering work for various companies. He did all of the designs for callan marine, 50, 55, 62. When Callan got out of building boats he acquired the molds to the 50.

John was also the throttle man for Callan.

They are both the best of the best in this industry!!!Callan and Cosker are the baddest on the planet!!Cosker is on his own with Mystic powerboats after the Callan fame.