tito63nova

I am new to the world of HP. I have started a complete restoration project ( 63 Nova 2dr). I am now in the engine stage but I'm confuse and in desperate help.
Here are my engine Spec...
Block 4 bolt main. Refresh with a .040 over bore.
5.0 Heads 66cc
Stock Crank
Trans 350 Turbo stalconverter
Rear-end from 89 GTA Trans AM gear are 342
Factory Intake and TPI items from a 88 Z-28

I want to optimize the power of the TPI system and of the engine. The car is going to be a daily driver but with attitude.
If you guys can tell me what set-up would help me get to or closer to 350hp at the rear wheels I would appreciated.

What Component should I buy
Cam
Valve
Runners
anything that would benefit the project, please let me know.

b's90cam

Since you don't have to worry about smog, i would get a stealth ram. That will give you more power than any intake or runner swap. Then get a set of heads, i like the trick flow heads, a cam, and full exhaust. That will give you probably 350 at the wheels. You'll also be streetable with something like a zz9 cam. You'll also have to learn to tune that ecm or have someone do it for you.

87TPI350KID

350 rwhp on TPI will take lots of time, work and tuning

ZZ4 cam (very streetable)
AFR or Trickflow heads
9.5:1 compression
Edelbrock Lower intake
SLP runners ported
Ported Plenum
1 3/4' headers
True Duals if possible
Upgraded Igniton and Fuel Systems
Ed Wright Tune

Not really for horsepower, but they help TPI significantly:
3.5x gears
Bigger Cooling fans
A good flowing "cold" intake