Can I just switch out the open-diff with a trac lock?
 

I'm talking about the 05-07 V6 /w 5spd manual models.

Can I just switch out the open-diff with a Limited-slip diff (trac lock) without any major modification? Will putting a LSD mess up with the car's computer?

Has anyone here just gone to a dealer and ask them to install the trac lock, what is the dealer's reaction?