Well worth every penny! I can not say enough good things about this alternator. After I installed the alternator, and performed a big three wiring upgrade using true 0 gauge ofc, an 500 amp isolator and a xs power d925 my idle voltage sits at 14.8! I am running 3000 watts in my car, I know it isn't much but I like to over build so I have headroom. I have 2 4 channel hertz amplifiers and a jl audio 1000/1 rd. I have 0 voltage drop on bass heavy songs at idle!? Beautiful as well!