It's all relative there are some SMALL ASS T3 turbos, like a T3 straight .42. A .42/.48 isn't a bad choice for a D, however, they do not make any kits with them that I know of.
The edelbrock kit, is a damn decent kit. The greddy is simpler, and more time tested, I do not believe the BOV and FMIC on the greddy kit are CARB'ed though.
Side effects of a turbo D? Well I can't pry the bitches off my jock with a crowbar, does that count?
-PHiZ