If it was me I would make sure there isn't a loose bolt in the brakes or control arms or track bar first. I had the exact same issue a click on the right and left. took forever to figure it out. thought it was a bushing which was blown, thought it was the brake pads. In the end I did an akebono upgrade after my rotors warped and it was gone. I heard that it could be a sticky caliper, but to tell the truth the akebono's are so much better than the original front calipers that I wouldnt bother trying to fix the teves or replace them with rebuilt.
2000 Lmt. V8 QD, 3.25"/2"F/R, 2" BDS, Bilsteins, JKS Tr Bar, on 33's