Naw, Tony, Just funnin! The panther should be just fine for mild performance applications. These Energizer kits I've heard about make quite a bit of difference froim what I understand, but have no idea what they are, how they work, or if they are even worth the money.
It really matters what you ant to do with the boat in the water. If you want balls out performance, the Panther ain't gonna do it. But if you just wanna cruise around, ski and pull tubes with it, should be more than adequate.
Truth be told, you should be able to find a Berk equipped boat in similar condition for a similar price. Look at Brad's Southwind, beautifull boat! and a Smokin deal!
Be patient, and watch the craig's list threads on here. I'm sitting here right now drinking beer trying to convince myself I don't need the 21.5 Sleek Glenn found! lol
Ray