I may be wrong but I had always heard the orange was for non emission, the blue was for the period of emissions before computer and black was for computer on. I have been lied to before.....
Did you put the weight of the truck on the springs before tightening the bolts at the bushings? If not it can bind them up to be a lot higher than should be. Don't ask how I know....
I used the Redhead box and the Borgeson U-joint link. I love them both. It drives much more precisely. The Moog ball joints however, are tight as a nun's a$$. When they wear in it will be even better.
I used 3.5 inch in the dash. I agree with kick panel speakers not being all that. I did not use a center channel, but loaded up every where else. I put 6.5 inch components in the front doors on spacers. If you have manual windows you can cut them in down at the bottom. I have power windows...