Has anyone looked into the retrofit of one type of PCV for another on the OM642?

I have the (I believe) older unit, which has a metal fixture bolted to the engine, and then a round plastic pick fit to that.

There is another variant that seems to only be the metal section, with I guess more of a valve setup inside of it.

As I understand it, the seals on the section that mate to the engine go bad as well as anything else in there. I suspect that’s why the newer models replace the entire part. But I don’t know if this can be done with the older variant.

Has anyone investigated this?

I’m getting a bit of leakage from the front of the engine (not the oil cooler) due to oil seepage through the intake system. So I want to be sure the PCV is squared away properly first.

Thanks!

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (116k)
1991 350SD (206k)
1991 300D (228k)
2008 ML320 CDI (199k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (267k)

Past Diesels:
1983 300D (228K), 1985 300D (233K), 1993 300D 2.5T (338k), 1993 300SD (291k)