99xcss4
frank'n (truburban) K-2500
I am no expert on the subject but it seem that the earlyer gmt800s had regular climate controls like on 95+ gmt400s and latter on they got left and right controls I do not like the twin controlsI'm not sure what 800 interior I've seen, but to me they always look broken down. The HD's look a lot better, but those are mostly more work truck types, I've looked at, I think.