Can someone tell me if the firing order is able to be modified? (not a deal breaker if not, but it would make things easier) Also, can the E92 drive standard injectors in lieu of direct injection?

The idea here is to swap to an E92 on an engine I convert to 58x so I can also use an 8L90... Of course there are aftermarket options to control 8 forward speeds in an automatic, but the factory GM option will be nearly plug and play. Stock trans tune from a 15 silverado should be nearly perfect for the size and weight of my truck. Not to mention the superior availability and durability of factory controllers.