Advice on engine adds for my 92gt!

I'm soon having a DSS racing long block built, and it will evetually have a hellion turbo system, and electronic boost control on it.  306 stroker, level 20 block with all the bells and wistles. I don't know if it's possible, but on a boost of 6psi I would like it to run around 400hp plus or minus a few, for day to day driving. For the track I want to be able to turn up the boost to get between 600-650hp and make a few corvettes cry.

I was thinking about getting a 76mm MAF, 70mm throttle body and good upper/lower intake for this build up that I could put on my present 5.0 that already has a cold air intake, MSD 6AL,Pulleys, radiator and electric fan, until my DSS combo is built, and I can switch it over. Any opinions if a motor/turbo build is possible to fufill my HP wishes would be appretciated as well as MAF/Trottle body/intake sizes or combo's that can help achieve this goal would be nice too!