Sonny I went through 3 Delco alternators and now I am back on old reliable - the Motorola. I am convinced that the single wire hookup that the Delco mods use is the problem because of the digital voltage regulator that has to be used. It cannot tolerate the swings in voltage without another voltage sensor wire similar to the setup that is used in the midstates modification on their web site. I believe if I use that setup on my PJ Grady Delco it may last. I just got tired of messing with it. SpecialT does rebuild the Motorola's and so does DMCH. After all the work so far I am inclined to stay with the Motorola. The only reason I may put on the Delco is because I have it and it is a sunk cost at this point. Harold McElraft - 3354