How bad we talking?
There are some pretty extensive 616 rebuild threads in the archive and there's this absolute banger on youtube:
https://www.youtube.com/watch?v=44-twsAtO0Y&t=265s
It's been a while since I've read, but from memory there are an obscene number of variables re: how many components are still within spec and reusable. You're likely looking looking at thousands one way or the other.
Rollguy is the man to ask.