@wtrskior there is no way to know the hours on a 2000-2002 GT40 based SN with any degree of certainty. The computer doesn't track it, and unless the new gauges were matched to the old ones, they started at 0 when replaced.
I bought an absolutely mint 2001, with a perfect pass, and a known low number of hours for 16.5 last year about this time.
Starting with that, I would say the crash reduced the boat value by 5K, the PP by another 1500, putting you at 10K. A new interior is 2K, but if it's not too bad I guess you could live with it. Still, I wouldn't pay a nickel over 8 for that boat, but it depends on how bad you want it. Crash repairs, even if done right, create future problems with shaft alignment, extra weight in the boat, gelcoat cracking, etc.
Good luck!