Thanks all for the advice and compliments. I had a longer reply written up, but for some reason it didn't post.

I picked her up from my lot tonight. She started right up and idled smoothly within one or two seconds.

The car does seem very nice for the age and mileage. Drives better than my dad's '87 300SDL. Are they the same engines?

I'll check the suggested areas for rust tomorrow if I am able to get around to cleaning the engine bay. I have to pick the title up from my buddy and get it to DMV for tags.

I'm tempted to keep this car as a daily driver and keep the AMG garaged for nice days. Out of curiosity, what would a car like this be worth on the current market, assuming no hidden surprises?