At a Y in the road - Part Out Z or Sell As Is?

[itsEz]

Can't get the Z to stay on. The mechanic says they Think they finally figured out the issue but it's going to cost about $2.5k without guarantee it'll fix it or he said a better option would be to swap another engine for ~$5k. The issue has something to do with the passenger cam timing. Something about the oil pressure being low (might have a slight leak that over time messed up the timing? Don't know)

It's 2009 MT Touring Gray. 175k miles. The front bumber needs replaced. Slight crack in windshield. It's just to a point where it has a lot of minor things that add up to a lot. The shop offered to buy it for $2.5k which is not happening.

I'm thinking of parting out. What do you think? Anyone have any idea how much you get from slowly parting out?

Thanks