it seems to me alot of people dont give knockoff stuff credit. in MOST cases the knochoff woeks the same as the rear ones.. i think the only thing that would make a difference is what you do with it. someone could have a dailydriver gst and put a knockoff wastegate on it, it would work fine. but some people who race there cars at well over the stock boosted rate or hp rate buy the knockoff and bitch when they break. its like buying ebay coilovers and autocrossing with them, then complaining that your shock blew