I have the compressor maps for my turbos. Trust me. They will flow 30lb/min but that's at the end of the island and it's nothing but hot air
As far as the t28s. We've made 400whp and more consistently with vq35s.

And this is just a first round experiment. I have enough turbos and wastegates and such laying around that I'm fine.
I was originally going for a single setup but there just isn't enough room
k