Swapping to Auburn ?
Sry for the simple questions but i don't know jack about rear ends.
why the 'lt1' concern with a 99 LS1 ?
you have to be concerned about carrier 'series'.
you didn't state if your auto(GU2-2.73 GU5-3.23) or stick(GU6-3.42) and what ratio you want to convert to.






