even when its completely ripped out you still need a lock bar in there.
i got a NV NO1(like in my sig) Lock bar bout $85 delivered at the time
got it installed by Wholesale Suspension in Blacktown.
mine was the first one they did they said it was TOO easy cost about $70 but i did get in installed along with alot of suspension components.
Yes they ripped all the lines out and re-routed the power steering pump(i believe it was)i just printed out the tutorial i found through NV NO1's for sale thread and gave it to the workshop.
Either way its recomended you get a 4wheel alignment after installing,so might aswell let the workshop do it.
i read in total its about 25kg, i didn't weigh it,but it looks about that.