Just reading here and there on things about turbo's:

1776-1914cc engines are good. Turbos like smaller stroke. This will also increase the engine life. I have heard CB's turbo creates immense horsepower but takes a while to setup. VWTrends did a article on Turbocity's and said it was great, easy to install and doubled the horsepower of their stock engine (40+hp to 80+hp on the dyno). Don't know much about Low Buggets. Probably a rather nice setup coming from them(him).

Once again, these are all just things I have read here and there and I may be wrong.