Can’t help with id, but I can answer your second question with one word: “more”!
Just kidding... you’ve had plenty of warning, so I’ll throw in a more optimistic note. I wouldn’t assume you’ll have to “replace everything”. Most everything attached to the boat was made to withstand exposure to sun, wind and seawater, which means weather and time don’t necessarily cause any problems.
Your lines are probably rotten (unless by chance they’re properly stowed below and protected from the elements... in which case they could be perfectly fine. Again, assume nothing.)
Stainless steel stuff should mostly be good as new after a good cleaning. Look for corrosion at welds, but I don’t think you’ll find much. Check your standing rigging carefully. Sharply kinked wire rope, broken strands, sharp bends at the swaged end fittings would be warning signs. Unless it has been badly abused, it’s probably fine, but if you do find damaged rigging, consider abandoning refurbishment. Standing rigging is expensive.
Plastic parts? Or SS parts with plastic sub components (ie.blocks and other tackle)? Inspect carefully. If they haven’t seen too much sun they’re probably fine. Even if no good, consider rebuilding... sheaves can be replaced in many block assemblies. Also look to salvage. A block’s a block in a particular size/configuration. Doesn’t have to have come from the same model boat.
Anything rubber is probably shot, but if your goal is just to go day-sailing or maybe an over-nighter in good weather, you can wait on replacing most things rubber.
Which brings me to my last and most important suggestion. . . Before doing ANYTHING, inspect the deck and hull thoroughly. The fiberglass is far and away the weakest link in the whole assembly. More specifically the core. On the deck look for spots that don’t feel solid. On the hull tap with small hammer and listen for spots that don’t sound solid. Most older boats will show a few signs of aging, but if you find more than a few, or any that are large or particularly squishy, then don’t bother with any thoughts of restoration. Fiberglass can be repaired, but the cost/complexity is high!
If you do have a sound hull and are willing to do the work, it could be a very rewarding project. As others have said, though, you will probably end spending about as much as what you could buy a half decent boat for.
