I just traded my 2021 AT4 with the 6.2l that is on the recall list on a 2025 ZR2 with the baby max. I have had it 2 weeks now and so far love the ride and fuel economy. First fill up was 23mpg with about 75% city driving. I'm going to keep mostly stock for now except thinking about getting larger tires to fill wheel well in a bit more.