GTR had upgraded turbos and supporting mods on E85. Buddy's 02 Camaro is a built 427 LSX with a single turbo. He was on 19psi (was on 22psi on his 8.94 @ 164mph pass). Camaro made 1140 with converter unlocked on a Mustang Dyno. That GTR was quite fast.
https://youtu.be/3f505Q5w_UQ
https://youtu.be/3f505Q5w_UQ