add this after line 33 in version_installer.sh
elif [ $buildnumber = "ro.build.version.incremental=eng.pawitp.$4" ]; then
	ui_print "  Build for GT-I9000M, match!";
	ui_print "  Installing mod";
	cp -rf /tmp/PerkaMod/* /system

and this at line 14-15 in updater-script

#first one is the SGH-I897, the second one is the GT-I9000, third for GT-I9000b, fourth for GT-i9000M
run_program("/tmp/version_installer.sh", "20120115.112446", "20120115.093824", "20120115.093824", ";20120115.093824")