Rediculous Labour Quotes?

[c197mark]

I've never had any problems with labour costs comes in handy being a parts man for 11 renault techs I do them good prices on their parts for their private jobs and they work on my car for nothing good deal I think lol,
With this diff what are the gains with it, I'm not really clued up on diffs etc want 2 something abit special to my clio and was thinking of gettin one these but just not sure how much difference it would make

 

[richandgem]

An limited slip diff allows the wheels to spin at different rates, this stops the inside wheel lighting up when you gun it round a corner. Basically give you more grip and allows u to put the power down earlier

 

[ben_r1]

I Mainly need it for the drag strips, as soon as the nitrous starts injecting on the launch i lose traction, usually on the left hand wheel. And with every gear change it stop and starts injecting with the throttle.

I've had it spinning on the limiter in 3rd in the dry on an aggressive nos controller map.