There are variations in radiator core design, some better, some worse. But one thing is for sure: 30 years of accumulated wear and debris isn't going to work as well as new and clean.

The turbo radiator was different from the NA radiator. I've never compared, but I suspect it's larger since it required a removable top rail on the radiator surround. The turbo hoses are next to impossible to source, even from Mercedes. Still listed in the parts books, but on infinite back order. My suggestion is to buy the one that is correct for your car and don't buy into someone else's problems.