Panic,
A increase in static compression ratio would be my first choice.
I imagine it would take a special flat top piston with a compression height that allows a zero deck after a minimal block deck cut. Then some careful material removed with a ball mill on the top of the piston "just" under the opening formed above by the combustion chamber to bring static compression down to something closer to 9.00/9.25 to 1. This would preserve as much quench area as possible. I'm reading that the turbulence created from quench helps reduce pre-ignition when compression is raised.
Beater,
Your idea would most likely obtain the best results and even higher gains in torque and power compared to a strictly NA approach. I've read where a smaller turbo can be used to just bump the lower RPM performance. I'm guessing if either forged or cast pistons are used, it would still take a good EFI system to manage it all safely. Especially if I'm 20,000+ pounds combined climbing a mountain pass.
