Thanks for the conversion REV0 and thanks to the HellRazor for some usefull tips
Done the conversion on MULTI3 version - CZE/POL/HUN with 22 DLCs installed (except useless Genesis), deleted almost 1,5 GB from DLC folder related to another languages /DE,FRA,SPA,ITA...
Final size:
DVD1: 4,37 GB
DVD2: 4,33 GB
DVD3: 3,4 GB
I changed related lines in InstallerScript.iss to registy entries that were created after installation of noncenverted Mass Effect 2 (Language), after installation those entries were not present in windows registry...
Anyway the game works fine, just this little thing bugs me