Not sure what kind of information you're looking for.
When I was first learning to kayak ~1990, I paddled Perception Dancers, and maybe even a Mirage...which seems to be pretty close in design to the Eclipse. You might Google for those; you'll find more information on them.
All of those boats were too long and had a poor paddling position--legs straight out in front. There's a reason kayak design has evolved and that they really don't make 'em like that anymore.
That being said, if you know what you're doing, it could be fun to take out to see how paddling used to be. It will make you appreciate modern kayaks even more.
I'm not sure it can handle "whatever." I don't know how well plastic holds up over decades. You might not want to take it creeking.