That car has the inline 6 engine (I'm pretty sure, could be wrong though). It also has the first year of the 5 speed transmission. I've read there are problems, that can be fixed, with the 5 speed mating up to the inline 6. The engine is strong, very strong if maintaned properly. Don't know much about the 5 speed trans. My car ('94 wagon, M104) was skipping like that a few months ago and I changed the plugs which had ~ 0.047 gap instead of the 0.032 due to electrode wearing down. That could cause the stumbling. Have the transmission checked out before you buy. Can't suggest a price though.

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dtf
1994 E320 Wagon (Died @ 308,669 miles)
1995 E300 Diesel (228,000)
1999 E300 Turbodiesel ( died @ 255,000)
2006 Toyota Tundra SR5 AC 4X4 (115,000 miles) rusted frame - sold to chop shop
2011 Audi A4 Avant (165,000 miles) Seized engine - donated to Salvation Army
BMW 330 xi 6 speed manual (175,034 miles)
2014 E350 4Matic Wagon 128,000 miles
2018 Dodge Ram 21,000 miles