Installed the gm alternator bracket from roadless gear a couple months ago. When installed the pulley on the new alternator was about a 3/4 of an inch behind the other pulleys. So a little hammer adjustment was needed to get them in line. About a month later started hearing a vibration, well one of the arms on the bracket fell off due to poor welds. Called roadless gear to tell them the story and they did replace it for free, (the only good thing they did.) Got my new one and the welds were so poor that i had to grind them all off and re-weld the whole thing. These things look like a 5 year old picked up a welder and tried to build them. Just wanted to warn anyone looking for these brackets, i would get them from another company!