2WD Same fitment, yes.

22mm will make a difference for sure, most will tell you to go thicker, though. I was always happy at 25mm Neuspeed, the 25mm Eibach I had for a while felt stiffer.

Which bar is it?
 
Dunno about the 22mm whiteline. If you have standard front and aren't going to change, go for it.

Neuspeed is adjustable, I had my 25mm on the middle setting - it did it's job without any drama.