I can't post pics from my phone but it won't fit. If you google cylinder head pictures it will be evident. The M102 8v has round exhaust ports like a m103 and 2 bolts per primary. The 16V heads have more square exhaust ports and 4 bolts per primary.

You could I suppose track down someone who makes an 8v exhaust flange in steel, then cut up a 16v header. The port spacing is similar. At that point you could just track down an 8v header or do something else.

An M102 is not slow in US trim in my opinion. I have a 190e 2.3 5speed usa car with a euro cam, no cats, and pacesetter exhaust and it keeps up with a friends poorly running USA spec 16V. I also have a true euro 190e 2.0 5speed and while it's not fast, it's quick enough to be entertaining.

Are you sure your car is running right?

For M102 performance there arent a lot of options. There are some cam regrinds out there, some companies used to offer ported cylinder heads (obviously you could diy or have any shop that does head work do that), there are exhaust systems out there that are hard to find, hard to find headers, and a 300E airbox snorkel was what AMG did to their M102 cars.

Converting to EFI and then going forced induction are the big gains.

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