75 shorty - Need to go lower, HELP.

[chevyfanaddict]

So ive got my 75 shortbox lowered on belltech suspention and 20" american racings but its not low enough for me and ive seen alot of other trucks around with the drop im looking for so Im looking for my next move. the truck has a 5/6 drop and dropped spindles and 3" (maybe 2", cant remember) springs up front and just a flip kit and notch in the rear. I wanna go about 2 more inches all around if that is possible so what do I need to get? Shackels or blocks in the rear (could I use blocks with the flip kit?). cut front springs? I heard there were two variations of belletech drop spindles for these trucks, one was like a 2.5" and the other a 3" but I dont know if thats true. Let me know if someone knows whats up. th\anks