Turbo change

I missed the Hughes super heads.

Turbine housings would make some difference, but still way too much turbo in my opinion. Unless you’re shouting for low 8’s.

Gt3582’s are what I’d run. They would likely spool close to 2000rpm sooner and capable of more power than your block can handle.
I’d like to try and stay in the T-4 family so I don’t have to re pipe my hot side.