Thanks, guys... so basically, so long as it runs and isn't rusted out... I'm good. The accountant in me likes the fact that, for these American beasts, the parts and mechanic bills are easier to stomach (and find, for that matter). A client of mine is swapping it for the Benz, and he's catching flak at work for that. I had to promise him that I wouldn't... mistreat it by putting big rims on it and installing several subwoofers. A promise I gladly made.
I took the car back today - he's got a guy who's going to fix the fuel sending unit and charge the a/c with Freon. Which gives me time to finish putting parts back on the Benz before the swap. At that time I'll be sure to post plenty of photos of the yet-unnamed new member of my automotive family.