Hy Jbob, in a lot of cases the manufacturer of the parts will be the same, as to quality, everytime we discuss brake parts someone will come along and complain about "Chinese" part quality, but I think that should be dealt with on an individual basis with whomever you choose to be the supplier. If you found parts at RockAuto chances are you can find them at other suppliers as well. I always try to find parts at RockAuto when I look stuff up for people, they have the best prices usually. If you can find a F.L.A.P.S. where they know how to read a catalog (and have the catalog to read) and not just punch keys on a confusilator, you would do well to go back to them. Please remember when asking questions to tell us the year, make, and model designation of your truck, hope that helps.