Here's a nice little Blown 528 EFI HEMI.
She squeezes out about 1050 HP on pump gas..
As far as the turbo questions go, my understanding is the technology is present now that allows the turbo to provide instant power, just like a supercharger. I dont know all the specifics, but I have heard a bunch of guys talking about this and the old day os delay, are gone. Its power now in both cases.
Take care,
Hemi6t8