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What ever you do, enginemanagement is an much need thing to look at. That is were LANs system is so good. It provides not only everything to install the S/C, but also larger fuel injectors, a better MAF for metering the air and the fuel and timing maps to run it all.
As for S/C verses turbo, what your asking for with the lowend torque and power, a roots or twinscrew S/C system is your best bet. In order to get the lowend your looking at you would need to run a small turbo, which would not do much in the upper reaches. LANs system uses a whipple twinscrew supercharger which makes boost off the line with no lag and simply pumps more are to hold the boost pressure as RPMs increase. Even a Vortec style supercharger doesnt do alot for you at lower RPMs, because the compress has to be turning at a certain RPM before it can start to build pressure.
I've always looked at it this way. If you want big numbers at the peak, use a big turbo or Vortec S/C. If you want a nice wide powerband with a smooth delievery you want a roots or twinscrew. The Roots are cheaper, but less effiecent and cant boost as high as a twinscrew. Much of what I'm saying can be found in the ECUTune Stage III development thread. I have a stage III on my SVX. I've also owned a 91 Eclipes turbo and currently am playing with a Conquest TSi. My SVX with the StageIII twinscrew system is much tammer than my stock Eclipse was. And the SVX has nearly twice the power.
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