For those to interested in the boost idea LMC has a dual relay kit around $40 already wired up....it worked and was designed for Squarebody trucks.........the kit.......
http://www.lmctruck.com/features/cc/CC9DP.htm#partsTable
......and the install........(I didnt mean to install the video since its not a G-body vehicle, can someone let me know if I need to delete the copy/paste link).....
The above kit looks very interesting,and priced right as well.
Does it work on our G Body's ??
Guy