turbo or supercharger

[300hp99GT]

if everything works out i should have plenty of money to spend on some mods in a month or so. im going to take everything off the car i have now because its a lease and trade it for a yellow 99 GT. im going to pay cash for it. anyway.. im debating on if i want to spend @ 7k on the TDC stage 2 turbo kit or @ 4,500 on a procharger. im figuring labor and dyno tuning in with those figures. they claim at 5 psi with the turbo kit it makes 450rwhp and they ran a 12.04 with it set at 4.5 psi with slicks in a 2000 GT with an automatic. it has an in-car boost controller and can be turned up to 40psi. they said the stock block can handle 10 - 12psi. but i also want to get a PA C-4 put in it and a built bottom end in the motor. preferably a SHM 300ci stroker kit. what do you guys think ? is it worth that much extra for the turbo ?