Well I've owned my fox for 2 years and it's finaly time to build it.  Here are my plans, and comments would be helpful before the build.

Plan for right now is a 331 stroker, Trickflow heads and intake manifold, still working on cam (thinkin mild/wild that will give it a fairly rough idle, and a Procharger D-1 with a 3 core inter cooler (20ish pounds of boost).  I heard that setup should be good for right around that 600rwhp.  I've already got BBK long tubes, shorty X-pipe no cats, and magnaflow cat back.
again any comments about improving this setup would help alot.
The cost right now I'm guessing right around $9,500.  

Good luck on the 9500$ Hopefully you can shop around. The supercharger kit alone is around 4500$ plus with a planned 20psi boost, you had better buy a well built bullet. Should come in around 6K. But i think you forgot to add in the upgraded fuel delivery and so on so forth. But Good Luck! With the planned upgrades you might want to think about radiator, fuel system, more chassis stiffening, Upgraded tranny for sure. You have one hell of a combo your looking at but it won't do you any good unless you can get it past the crank and to the ground.  

I'll end up redoing the fuel system and I've already got an aluminum radiator that holds an extra gallon and an electric fan (as of right now the car don't get warmer than 140).
I'm sure I'll never get all the power to the ground, but I've got plans for getting subframes, crossbrace meembers, swaybars, and strut tower braces for front and back.
Anyone know of a tranny that can take the pwr/tq? 5 or 6spd