www.ebay.com :slap: :hammer:
Ok, The Powerdyne is cheap, that's the main plus in it's favor. The belt run's it alot quiter than the gear's. The same thing however raises the amount of heat it pumps into the inlet air. They really aren't any good past 10 psi, even though people do it. People do alot of goofy thing's though. Not too much left after the factory kit.
The Vortech, well it's a known quantity. No one ever say's their Vortech is junk, ever. The S-trim can run to about 16 psi fairly efficiently, and it makes a cool sound. The Vortech is upgradeable as much as your heart desires also.
Shop the corral, and you can get a Powerdyne for around 1800 on sale, a Vortech tuner kit for about 2200, plus either a MAF/pump/injectors (around 500 to 600, or less depending on how you shop), or a FMU (200).
I've seen used Vortech's go, complete, on the corral, for under 2k, some for under 1500.
NES got his powerdyne for 700, I've seen them for around 1k. Patience pays.