Best diff setup for launching?

[pneumo]

This might be a tough question, but I need some help with this one. Which combination would let me launch the car hardest and get the best 60' time in an AWD? A welded center diff, Quaife front diff, or both? Or stock with the stock rear LSD? What do the fast guys run with? Any thoughts or opinions welcomed!

 

[green92gsx]

The best for 60' footers would be a welded or spooled center diff. The 4 spider will hold some good launching while keeping good street manners.