Working great for now, but not sure about longevity.
I bought a 1989 Lincoln Town Car with a 302 CID V-8 engine in it. It had no acceleration and was totally gutless. I found cylinders 4, 6, & 8 not firing. I tracked the misfires down to stuck fuel injectors. I put a set of these in and was able to break the rear tires loose on dry pavement taking off from a dead stop and going around a corner at slow speed.
I noticed that when I compared these injectors with the original working ones with my injector tester, these made a very weak sounding click where the original ones made a very stong click that I could feel. It could be a weakness in the degisn of this new set of injectors. Only time will tell how good they are for longevity.