i have dealt with nopi before. they are horrible!!! their prices used to be rediculous too. there are plenty of other places to go through before you should even remotely think of nopi. of course, that's my opinion.
i forgot about the Eibach stuff. Eibach carries good quality with it's name, although i've never even known anyone with one of their sway bars.
Hey steve, as far as the ST bar being 1/2" off. what do you mean exactly? if you mean fitment, mine bolted up like it was missing from the suspension all along, hehe.
http://www.Coximport.com is a good place, meaning everyone who i've heard use them has been satisfied. they have the rear sway bar, and i believe they are in NC. you can still look for lower prices, but sometimes finding good service is like trying to get a "can i help you" at a mcdonalds.
the bushings i'd recommend are Energy Suspension bushings.
http://www.energysuspension.com . i believe these are the ones mike (vbspec) has.