my vote is for the v8. do a search for things to look out for.
FYI, 93 was actually the first e320 with the m104 engine, they just didn't change the trunk lid and lenses until the following year. as such there are known problem areas - the one you are looking at with the low mileage is immediately suspect for the head gasket and wiring harness problems...
1993 300e-2.8 - gone now <sigh>
"Do not adjust your mind, it's reality that's malfunctioning"