another lowering question....will this work?

[VOLZ1207]

hello. i have a 72 lwb lowered 3 1/2" front 2 1/2" spindle and 1" lowered coil, and i have 3" springs and 2" blocks in rear trailing arm setup. can i go to a 3" block for a total of 6" drop? i know that i probably need rear shock relocation kit as well. i have not measured the pinion angle as of yet, but i have not noticed any problems with my current setup. at being lowered 6" will i put the driveline in a bind or is every truck different? has anyone ran this setup?