I have come across a few threads here on bitog regarding people buying parts off amazon and rockauto and finding out they got counterfeits... it seems like spark plugs seem to be common, but I have read about other parts too, so my question is, how common is it to get fakes off rock auto or amazon? I would expect it more off amazon, and I am somewhat concerned now because I have bought a multitude of brand name parts off amazon for cheap (some sort of sale, as the prices would go up afterwards), and reading these counterfeit threads makes me wonder