Staying on topic:

Turbo's are great if you want max performance for:

A. WOT
B. Street Use
C. MAX #'s

I believe that if there was any research that was worthy of investigating, it would be an efficient roots/screw charger that was intercooled. I could care less about peak #'s I want to see how the overall hp/tq band has improved.

You can't beat max boost at 2000rpm. I also know that trying to deal with lag and boost associated with a turbo while creaping over rocks is a real work out for both feet.

If someone wants to build a 2wd street racer X, then turbo the bish. Do it, show us, and make a sticky. If you want something to scoot without even 1 second of lag- go roots. I don't believe that anyone is going to develope a variable ratio turbo that the common-folk want to invest in.

Kenne Bell on top of the VQ40 would be a nice suppliment to the power it already makes.

I would rather build a sleeper VQ with a quiet blow off valve that will pull like a Caterpillar (sp corrected )from the hole than have a whistling dixie machine and 2fast2furious blow off noises.