Talking about VATN turbo's

there's been a lot of development there, and they are starting to look like a smart alternative..long way from the 350HP VATN turbo that SCCA fitted to their MK2 project, and doubled the HP output in 300 RPM between 3900-4200 RPM

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S/C's are looking attractive, especially the late model stuff coming from Japan that can be had very cheap..must admit, I've been tempted.
And...hybrid S/C cross Turbo installations...all the benefits of turbo ease with off idle boost from a positive displacement S/C
Having said all that...stay stock, it'll save you a hell of a lot of headaches.