Interesting topic. I like the way your write skib. Sound like a professor.
I am still in the process of building my LZ 2.2 turbo. you can see my build thread boosted goon.
I was orginally going to blow through using a single side draft dellorto, the carb is ready to bolt on. I had it turbo prepped and emulsion tubes. I was going to buy a turbo top hat like the VW guys use. They have a quite a few setups. check out CB Performance or search VW blow through. I got talked out of it saying it was to danergous but, still thinking about trying it once my engine is built. I have the FI setup but the SDS system is going to cost some bucks and a little more working putting it in, but probably would have better performance in the long run.