I would avoid salvage titles, even they claim just leakage. Too many hurricanes through the south in the last 16 years.

If you want a project car with very high miles, you might find one in the $2k range. A well-maintained XF can go 200-300k miles with that 3.2 engine.

If you are willing to pay a bit more, say $5-8k, you can find much lower mileage examples with most accessories working. Hell, I have 50k on my roadster and 40k on m SRT6 and everything works on both.