First off, I love the truck. I've alwasy wanted a rcsb duramax, and the one you built is basically perfect.
But yes, the 11+ 8 lug GMs had a 8x180 lug pattern where the older ones are 8x6.5
But yes, the 11+ 8 lug GMs had a 8x180 lug pattern where the older ones are 8x6.5