Welcome Aboard Blademaster!!!!
Maxum Boats as well Mercruiser are both made by Brunswick, along with Searay, Bayliner, Cabo, Hatteras and a large number of other brands. Brunswick is supposedly the largest boat manufacturer in the world.
The molds for the hulls and decks are typically all that is different. The basic method of manufacture and materials are the same. The Mercruiser and drive parts readily available. The misc parts are all 3rd party anyway, as they are on all boats. (e.g. Taylor Made windshields, Perko cleats and lights, Faria guages, bilge pumps, etc.)
Every part can be easily replaced. Only the fiberglass hull and deck are unique to the boat manufacturer. Unlike when your'e looking for a hood for a 68 GTO, if you have fiberglass damage, any fiberglass guy can fix it. Any merc mechanic can work on teh engine and drive. The fact that Brunswick no longer makes the line is irrelevant.