Well like the sub line says I just got done installing my 410 gears and trac loc rebuild and quite frankly im a little let down, I mean the install is fine no whine whatsoever but the car doesn't seem to be a lot different in terms of performance. It does sound a lot meaner but it just seems like it makes a lot of noise but doesn't really go anywhere. I dunno I haven't really layed into it in leiu of proper break in although I can kinda tell its not a major difference from the 327s that were it there. could it be that the trac loc is a little too tight ? I went with the 0.45 shim figuring the tighter the better. Or do I at this point just need a tune ?