Those are kinda nice- I haven't seen them before. How much $ and where can you get them?
I'll have to take a look again, but I think the original LCA's have the parking brake cable going through them so you'll have to R&R the parking brake cables. Otherwise, it looks fairly straight forward.
I watched these guys on Discovery Channel putting a bunch of mods on an '06, and they just took a torch to the original LCA's- cut them right in half, so they wouldn't have to undo the parking brake lines....wish I still had a torch!