Mirror question for modding

[BG1988]

anyone have the dimensions? I want to mod the K2xx mirrors onto NNBS apparently you can do a base swap so the K2xx will fit onto the NNBS...

i'm trying to improve the Aerodynamics and the NNBS is not winning any awards on the mirror size

trying to get 40mpg on this 6.0L engine of mine.. as 100% of my driving is at 45-80mph..

best i was able to do was 31.2MPG on the highway with it so i have to move to Aero mods now (Extreme Edition )

i don't want to spend money for nothing if it offers no benefit

 

[BG1988]

so no one has a measuring tape? I know it's moddable but but I want to know the size (the small ones on the tahoe)

i know you guys have a 2015+

 

[swathdiver]

Brent, have you seen Grumpy Bear's posts over at the GM-Trucks forum on improving efficiency and mileage?