Check out the rake on the front end! (The original in the ad)
I'll bet someone tried to take out the rake by cutting out a piece and welding it back. But they took too much out.
The forks themselves don't look bent, but taking them off for a close look will determine that.
I would measure to see how far back the bottom of the head tube was bent.
But, the top tube was bent downward right where it meets the headtube. Dang! I just noticed that. Much more work to get everything right. It will take some careful engineering to put it back like original.
It's a tossup, maybe the frame won't have enough integrity after redoing it.