I've been watching for months waiting to see when Ford would receive an Executive Order from the California Air Resources Board as well as a Certificate of Conformity with the US EPA for applicable emissions regulations related to the 2020 GT500. Interestingly enough, both were issued on the same day, 9/10/2019. I don't recall them previously being approved at the same time but regardless, they are finally in. I also pulled certifications for the 2020 GT350 and the Camaro with the supercharged 6.2L engine. The 2020 GT350 was given an EO from CARB on 9/03/2019 and the 2020 Camaro (6.2L) on 6/13/2019. Generally speaking, GM has had their certifications in place across their car lines ahead of Ford. Considering federal law regarding emissions and sales of vehicles falling under said mandates, Ford cut it a little close. CARB... EPA... There's a lot of data packed into only a few pages, mostly because you have to research each category. What you find is that Ford tested the GT350/GT500 to a different standard than GM. I'd have thought that the GT500 5.2L engine would have been in the same category as GM's supercharged 6.2L engine but that isn't the case. When looking at numbers I noticed in some categories GM was cleaner and in others, Ford. GM certified to the LEV3 LEV160 (Low Emissions Vehicle) category. Ford chose to certify to the LEV3 ULEV125 (Ultra Low Emissions Vehicle) category. CARB Certificates: 2020 Camaro 6.2L supercharged 2020 GT500 5.2L supercharged EPA Certificate: 2020 GT500 5.2L Supercharged A quick chart depicting the limits or standards for each category Of importance, particulate standards. I remember when Adam Christian from Ford (the gentleman behind much of the 5.2L engine in the GT350) told me about these upcoming particulate standards back in 2015 at the GT350 powertrain reveal. Well, we're there. Note the change after 2021. Why is this important? Ever notice the tail end of the exhaust system on a new diesel truck. It's an utter mess. Adds complexity, weight, restriction, cost, and problems. This shit is gonna get scary... Some detailed reading on the above, here. I also see that Ford now has a growing list of parts for the GT500 on their Fordparts.com site. Inching closer, albeit at a snail's pace.