I've never been this exhausted searching for a new vehicle. That being said, I finally found a 2021 Yukon SLT for MSRP (go figure, excited I found something for MSRP) but it's not specked as I would like it and I am feeling apprehensive about moving forward. It should be arriving next week. I want a 3.0 due to the gas mileage, the one that is available is the 5.3 also I know the 22 now has a new gauge/software upgrade. That being said, what is a realistic timeline if I order today to get delivered? My main needs are second-row bucket seats, with rear entertainment and 22's. Is it worth waiting for the 3.0 or pulling the trigger on the 5.3 without the new upgrades?