I redid a 94 2520 with 300 yami. It's lighter than original 225 that came off of it. Modified V not really suited for offshore, but I use mine on a river. Usual tank (for outboards) was 126gal. To replace measure to stringers from inspection ports. Add 3/4 or 1 inch on each side, pop a line...
I redid a 92 2520. Replaced floor in cockpit. Not too bad. Replaced tank (126gal) while I was at it. IF CC has modified V, don't even think about offshore...will beat you silly. I use mine on a river and in bays sometimes. Love it for that. Gunwales are flimsy on older Parkers. You can...
I've been redoing '91 2520. Deck had multiple soft spots. When I tore it out there was zero rot on stringers. Not really that big of deal to replace deck. Find your stringer centers, cut on centers and replace decking. I epoxied underside of deck before attaching. $20k with that motor...
I've got a 90 model 2520 I'm doing MOH on. I'm not familiar with commercial model, but yours looks just like mine (except I've got transom mount engine) Gunwales kinda flimsy on mine. I added two additional supports (like the factory ones) on each side and that stiffened up the gunwales...