Okay--I got it from UPS today. What are the benefits of this (besides getting rid of my broken--useless a/C) and should i expect ANY performance improvement? (like 0.1?)

Maybe mileage?

I also got a TBI chip (stage 2) and am having my trans rebuilt with a 2K stall and Corvette servo, I hope all this will decease my e.t by 0.4

 

Trans rebuild and stall converter sounds nice, .4 seconds may be possible if your tranny has been slipping. .2 seconds is probably more realistic if your tranny hasn't been slipping. Gears and posi will help a ton and compliment the stall.
I don't want to sound negetive, but you probably won't feel any gains from the chip...pre manufactured chips do little.....I had the hypertec thermomaster and it did nothing for the engine. It seems that is the general feeling from most people. Custom tuning is the only way to go given you have mods that call for it.
As far as the A/C delete pulley, you won't see any power gains unless you run the quarter w/ the A/C on. However, you will save some weight up front and clean up the engine bay a little, and that is always nice.

 

I agree, the most you see from the a/c gone is more weight transfer, move the battery to the trunk if you can.