I've not had any bad luck. I help my friend down the road, Matt, who runs a restoration shop from time to time. He likes using their universal fuel system in a box (LS style, he's a Chevy guy) and so far they've been nice. Done several of them. They can be used on anything with a fuel pressure around 60 PSI, so it doesn't have to be an LS of course. Fittings and lines all look just as quality as Earls, Russell or whatever and go together just as easily. Also, their camshafts USED to be ground by Crane, so they try to offer quality when they can. Now that Crane's gone, I don't know who does it. I've not had any trouble with any of their other items yet. I don't worry a lot about it because they have such a great return and warranty policy.