Bagging a '94 GMC ?'s

[Slammed '87]

Hey there. I am getting ready to bag my new '94 GMC truck. I have never done one of these before and have some questions. First off, i don't want to lay frame or anything, just want to be nice and low with the ability to raise if need be. I bought a set of cups for the 88-98's, 2" lowers and 3" uppers. When i got looking closer at my truck, the spring pocket looks to be more like 6" deep, so the 3" cup is to short? Do i HAVE to cut the frame to install the bags or does someone make an upper plate like with the 73-87's? Or is there a bigger upper cup that can install in the spring pocket? I also bought a shock relocater, and i have a pretty good idea on where to mount it, but does anyone have any pictures of one installed? any help would great! Thanks