Yes, I've seen the inconsistency. My friend Johann, "bob marley" on this board, has an sr 240sx with the same dang pump I have, I saw it when he installed it. I've never once heard his so much as squeak, let alone drone out his exhaust. It's luck of the draw and as always, I am one of the people who lost. That's why I'm not screwing around with it, I need to replace the bracket because the fuel level sensor broke and when I do that I'm going to have a nice Supra pump ready to replace the whinebro. Luckily there is a large market for used walbros, as long as I can find a good price on a supra pump I shouldn't have much trouble selling the whinebro to pay for it.