If possible, I would replace the bushings on the A-arms rather than go to aftermarket, "loaded" a-arms that (usually) include the ball joints too. So much of the aftermarket parts are Chinese junk. It's a crapshoot. You might get good stuff, but........
Example is Moog started outsourcing to Asia a while back. My own experience and the internet says the new Moog steering/suspension parts are now a crapshoot too. Mevotech has their TTX line, and Proforged is supposed to be good also--I just put Proforged upper ball joints on my truck to replace Moog's that lasted 25k. In fact the passnger side started showing movement at 10k. Toyota parts are probably the best bet.
+1 on the chinese junk. I might just replace the upper control arms and make sure the ball joint has a zerk on it.
