I've seen sellers who are asking an absurd price lower that price by maybe $500 a month until someone bites. Meanwhile, a lot of people invest their time in checking out an untenable deal.

But who knows, if you decide you're willing to invest $2500 and give him that as a solid offer he may call you in a few months and agree to it.

I have no experience with the 350 but I've heard about the issues. Doesn't seem to be easy to find a good used 3.0 603.

But who knows, at that mileage you might get enough years out of it to find that engine and eventually get 400k out of the chassis.

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1986 300SDL, 362K
1984 300D, 138K