OH YOUR A BIG IDIOT! DAMN FOOL!
haha
check this bud:
www.howstuffworks.com
http://auto.howstuffworks.com/differential.htm
you can read up on open diff and vlsds, lsds etc
start there, then ask more qs
read specifically
"Problems with Open Differentials"
what years with VLSD? 91 up. but dont believe the "if you have this and this then you have VLSD" that's nto true because someone can ALWAYS disprove it. iirc, the
ONLY guarantee you have a VLSD is if you have HICAS!