I currently own a 1982 300sd.

I have the chance to buy a 1983 300sd that is currently not running but in good cosmetic shape. The guy had a diesel mechanic at a Chevy dealership put on an injection pump he got from Potamic German since his car was having fuel issues. I asked him if he timed the pump. He said "no." The got the engine running by manually giving it fuel but it did not keep running.

He offered it to me for $800.

Yes or no??? Is this a fair price?

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1982 300SD Light Blue
2002 Honda Accord SE
1974 Toro Wheel Horse Tractor
2000 Toyota Tundra Pickup