Mini spools are for street stock dirt cars. They have essentually stock 2bbl engines and
are not on pavment. What yhou are trying to do will not work. You are just going to bust axles.
This is not for the street. Get a Auburn posi or a Eaton posi. Do nt use any of the factory GM stuff
or a spool. Save your money and get the Auburn or Eaton posi. It will pay off in the end.