Very Good.
Appears to have everything but the barrel, magazine, and upper receiver.
Surface wear, patina, cosmoline present: The kit should clean nicely and serve a good build set or replacement parts for your existing FAL or SA58.
We only could make out serial numbers on the bolt carrier. Other parts may not have been serialized but the wear is even so these were likely the original parts before de-mill.
This kit appears to have been made in Belgium by FN and not IMI Israel as their are Belgium proof marks and the receiver stub says Belgium. This would be an early contract build before IMI began making these rifles themselves.