buying a pig in a poke is always risky business even when times are good. I'd pass myself especially since the price is already not setting well w you and you have not even opened up the present yet. I'm assuming you have a non 999/998, 904 and are wanting to upgrade yours? I'd open yours up an contact master Kunkel for what hard parts to upgrade to/what kit to get and get a transgo TF-2 shift kit