Street strip sounds to me like street with maybe a trip to the dragstrip.
Best bang for buck is:
Tires (or tires and wheels) for the roads you will be driving on.
Front anti-sway bar if your car doesn't have.
Larger torsion bars
Clamp the front half of the rear leafs, and/or replace (exception possibly being Formula S & 383 springs).
Run the pinion snubber just against the floor pan when going to the track.

Choice of tires sway bar and t-bars depends on the roads you'll be driving on.
For good smoothed paved asphault and concrete only, you may want to look at grippier summer only low profile performance tires and the wheels to mount them.
In which case go with a t-bar in the .999 to 1.04 diameter, a large front sway bar. I'd look at Firm Feel and Hotchkis, possibly Hellwig for the bar. Each company has different offerings for bar attachment.

For run of the mill tires, good for mixed off road use, then IMO the above is about as stiff as you'ld want. On the other end of the spectrum stiffest factory t-bars and anti-sway bar and leafs would be a legit option.

In either case, align with a little more aggressive camber (more negative) and caster (more positive) than factory specs.