Oh crap, I just realized what you both are saying!!!
Correct me if I am wrong: you crank T-bars to level up with new springs and polly spacers.
If Alaska installs 2" polly spacers with 912 springs, then T-bars need to be cranked 4.5", because this is how much height the new set up gives him. So after all the drop off brackets really do not matter with the chassis height, because his lift is going to be 4.5", according to T-bars.
Now, the drop off brackets will only take care of the IFS, so in reality he gets 4.5" lift, but his differential will hang 1.5" lower. And that's how much clearance he'll loose in order to ease the cv's angle...
But then I have another question...
With those 33" tires, is he going to gain back at least that 1.5" he is loosing by installing brackets? When you install bigger tires whole suspension goes up by the difference in height to a stock tires, right? Please enlighten me...
Oh, and one more thing. I was looking at those drop off brackets, and I was thinking, that even it they bring down IFS, they look like they lift the rest up by at least one inch. That's why I was confused with Triathlete's answer...