[Tom Goldman]

Todd, start with about 60/40 front bias.
I started Tex's Mustang there,and it works well, and is around the same weight as your Firebird.
Keep in mind front tire size and pressure will greatly effect the balance that works best.
I also use different hardness pad compounds front and rear.
Both Wilwood and Hawk have many compounds available that will fit almost anyones caliper.
I typically use Polymatrix B pads on the front and C or E pads on the rear on most cars.
The B pads stop well,but are less agressive on the initial hit ,so they dont lock up as easily.