Market for 350SDL?

[Fidalgo350SDL]

Hello, long time member of Pelican Parts, but first post here at Peach Parts.

I have a '91 350SDL that I'm considering selling. I can't find too many examples to base a good market price, so I thought I'd ask here.

It has 177K miles. Midnight blue on blue. I'm the third owner. I've put 70K on it (lots of commuting; that's over now). I've had the turbo rebuilt, new radiator, belts, tires, brakes. It gets 26-27 MPG and drives great. Everything works, including cruise control. I'll be replacing the oil pan gasket as it leaks a little.

Any thoughts on what I should ask? Thanks,