Supercharger or Turbo(s)? How much hp?

[RodsByRad]

I have a stock 95 GT with MAC longtubes and flowmasters. I am trying to decide between turbo(s) and supercharger.

My question is how much hp can I get with the stock motor. I'm trying to work off a budget right now and have $3000 - $3500 to spend. I can buy a supercharger or maybe a turbo kit (possibly used) OR go with heads, cam and intake, but not both at the same time.

Is it possible to get 400+ rwhp without hurting the motor in the stock config?

I plan to bolt whatever I get on, and have fun with it while building a 331 in the next year or so. When I put that in I want to turn the hp up to 600-700rwhp and keep it a daily driver so it must be dependable. I already have one project that is really too wild to drive daily (1350hp pump gas):

http://www.rodsbyrad.com/534SS.htm

What do you guys recommend?

Emmisions control isn't a concern as they don't test where I live, but daily driven and dependable are a concern. I know this can be done, I'm just not sure how yet. I want to keep my A/C and other creature comforts.