I've searched, but I just want to make sure.

Can I buy the Greddy pulley kit (Waterpump and Alternator pulley)? Is the belt that comes with it the right size to run waterpump and alternator (no A/C, PS)?

Also, what 'hose' do I loop on the PS?

 

Yes, the Greddy kit is all you need to remove the airpump as long as you have the stock main pulley. If you have changed out your main pulley, then you'll have to source a belt on your own as the Greddy kit is designed for the stock pulley only.

 

gotham racing has a power steering loop kit..