I replaced VCG last night and used newer gasket which is 11120030496(after Sep. 2002).
And my car is 99 323(different part number for older model).
The newer gasket fits perfect and no leaks.
I don't know why there are 2 different gaskets but I'm happy with the newer oem gasket for now.
OEM xenon retrofit, Auto light/rain sensor DIY, OEM fog DIY,..........so many things DIY since 2000 :)