many, if not most of the parts are from the same supplier, The ones that say "counterparts" are a common one. So virtually all vendors will have the same stuff. There are exceptions of course. Like was mentioned above, there are even a few parts actually made in America, I got a voltage regulator a couple of years back, "MADE IN THE USA" I wasn't sure what to think. The fenton headers and intakes are made in china now. That is bad, there are certain things that should remain sacred. But this is the world we live in. If I had a foundry, I would make stuff here. (like a brand new wayne head)