pulleys question

Gonna put a magnum in my dart. Can I just use all the serpentine setup already on the magnum..I don't want ac but want to use the power steering and alternator. What do I need to do or is it easier to use v belt set up.

Yes, you can. There is an A/C delete pulley available for about $30 all over the internet.
The P/S pump from a truck requires some battery tray modification, but the van pump/bracket works just fine. The van bracket is a little lower than the truck one.