I just recently installed gt3 lca with tarret monoballs, and I didn't pick.up any significant extra noise. I don't daily drive mine though.
If I had it to do again I would probably get the elephant lca, I think they are fully rebuildable, and are about equal.in price to gt3 arms + tarret monoballs.
For a non track car I would probably just save the money and get a regular lca
