Hi, 2020 Sierra 2500 HD Denali Duramax here. Signing for a 2021 Reflection 337RLS tomorrow, first choice was the 367BH but neglected to get the 3500. Test drove both and difference wasn’t that big of a deal. I regret not getting the 3500 today. I drive daily , contractor, we live, we learn my old man always said!! Enjoy. J.