your money would be much better spent with a Trick Flow top end kit, or selling the motor you have and replacing it with a nice stroker motor...really you'll just be putting alot of hot air into the engine...let me tell you that when I first got my Kenne Bell on I thought "yeah, it will just go like hell and I'll click off 10 second 1/4s!)...in reality, it ran like poop at about 6-8 psi...enter one tuner and about $3000 more for fuel system upgrades and lots of custom tuning, now it runs like you'd expect...
The great thing about the small block is that it can make the kinda power you'd like to have without boost, a mod motor really can't...the key is the heads, intake and cam..what you have is really restrictive and just adding boost would net you about nothing except a lighter wallet...rethink the whole project, don't just throw money at it
After I went through the whole "boost game" with my Cobra, I realized a killer 427 stroker could be built to produce way more power than what I spent on the blower/install/mods alone for the Cobra
GT Stang: 427 stroker(all new, 4bolt block, forged everything): 600hp: $8000
Cobra: KB/mods/install tuning(stock motor): 400 hp, $8000
Now do you still want that vortech?