Welcome welcome, another Alpina kaki...
Well, bodykit I'm afraid either need to scout around on Mudah, or if you're lucky, perhaps some half-cut shops might have brought it in. Another option would be scour the net for used bodykits abroad, for e.g. UK and USA, for they often send their cars to breakers.
Good luck in your search for the bodykit.
As for add-ons, if you're willing to fork out for the original emblems, you can always visit the Alpina USA website.