Makes sense. I just installed a DIC in my overhead console this past weekend. It says i'm getting 7-10 mpg when my converter isnt locked in but around 17-23 when its. My average is around 11-12. I've always planned on going at least 3.73 if i ever did change anything. Wonder how it would change going to 3.90's.
I was looking through the static nbs thread and seen pics you posted. Thought to myself about time lol. How much did the 4.11 help out? My 3.42 & G80 have never gave me any problems (knocking on wood).
Man i hate to say it, but i think i'm gonna turn my truck into a clone of yours, spraying over the ambers/painting the emblem this weekend and might even go with the side exit exhaust. really nice truck btw