There are good ones out there for reasonable prices, so why bother with this one????? Now if you are getting it for beans and can afford to sit on it while you find a donor engine to pirate parts off of then that might be the way to go. That is to say for a daily driven toy.
Used SRT6/SLK 32 engines can be found for $3K-$5K in great shape with all accessories and supercharger, while dealers want $6K for a supercharger alone.

Also, never heard of anyone welding the pulley to the supercharger. I can't imagine they got it balanced so the supercharer is probably junk. Since you are dealer you probably know people that could pull it and repair minor damage/wear for a lesser price then someone just walking in off the street. But again, why bother??? You have an airbag light too, so someone has been monkeying around with that car.

Go find a clean one and enjoy it.