OK I bought a set of 4.30s and a 31 spline Trac-Lo for someone from here at SVTperformance. When I got it I thought was alittle confused. The Trac-Loc ws missing two spider gears, ring gear bolts, the screw/bolt that holds the pin in place, and the pinion gear had a small chipped tooth. The chipped tooth isn't that bad and I'm sure it can be cleaned up with a file. The ring gear bolt aren't a problem causehe reused them when he put his 3.27s back in his car. The thing I'm confused on it the missing spider gears. Can I just use th spider gears from the Trac Loc in my Cobra? The missing gears aren't the ones that are splined for the alxes. He has offered to correct this. He said that he didn't notice that they were missing or the chipped tooth. :beer: