I just put my front swaybar in on Saturday. Took a little while, but only because I dont have stock castor rods. Put the front up on ramps, drop out your castor rods, undo the swaybar (you'll need a 14mm & 17mm socket).
You'll need a 14mm spanner (x2 or 1 with a ratchet) to get either end of the swaybar...
Put the new one in. Put the castor rods back in, and go and get a wheel alignment. you can do it without taking the castor rods out (ie - you won't need a wheel alignment), but it's a pain in the arse.
The end result is well worth it all
Because I've only got the front swaybar as an aftermarket item, the bum floats out a little more, but it could also have something to do with my tyres...
Good luck
Michael