Ill tell you, I drove a few powerworks cars @ jetfest.
I drive a sedan with the stock blower and it was great, I also drove the car with the "big boost kit" and it was scary fast.(to me) I have a jackson racing unit andI love it but I swap it for a PW kit in a heartbeat.
You stated you couldnt decide between the PW and the procharger. how do you drive your car? The powerworks kit is good for boost right now! The procharger is like the vortech and must build boost higher in the revs. Personally however inefficiant they are.... I love roots type blowers.
Wont happen... I was in contact with KB for the longest time to be the test car for a screw type SC that was "in developement" they dropped the project and have no further plans as of my last conversations, I guess that could have changed, but I doubt it.
For the money you'd save on buying the Procharger you could get a smaller pulley, FMIC, MAF, and injectors and you'd be making crazy power out of a blower that does not rely on the engines oil supply and isn't a roots style blower both which are going to keep your intake temps down.
the roots blower doesn't rely on the cars oil supply and it's intercooled, so the downfalls of a roots blower aren't as large an issue. Plus the procharger does require maintenance. You do have to change the oil in the SC housing just like you change your cars oil.
The procharger has a wacky intercooler location, and very low hanging parts which could be an issue. The lack of CARB certification makes emissions something to consider. And you can't discount the value of cosworth engineering vs procharger.
So, mine will be back on the road hopefully within days if not a week. I haven't even gotten to drive it boosted yet, but it did sound insane on the dyno and it made good power the run before my intake manifold decided to spit a piece into the engine.