To chew off the edge of your tires in 1000 miles, the toe has to be way out. It would be so far off, you could measure it with a tape ruler, even with the ruler bent in the middle. You could mess up caster and camber and it won't eat tires that fast. Riding on the side of the tires with wrong camber doesn't scrub tires off that fast. And the Firebird doesn't have much camber range to the adjustment anyway, much to my disappointment. You won't get much negative camber which the car would benefit from. I see -1 to +2 as about the max range on my frame. Caster mostly effects pulling and steering effort. More caster improves high speed stability. If you've ever pushed a shopping cart that has bent wheels, you know what I'm talking about.
Look back through the archives for my rants about wheel alignment shops. You'll need to find a seventy year old guy who is still running his own shop to get this job done right. Mostly shops want to "set the toe and let it go" because toe is what eats tires and most customers leave satisifed enough with handling issues in the car but the car isn't chewing tires up anymore. People no longer demand nice handling because they have been driving SUV trucks so long, they forgot.
You are really better off teaching youself about the front end alignment and diy in your driveway than to drop it off at most shops. If you take it to a shop, demand they show you they have alignment shims out in the shop. I bet they don't. Then how can they do the job when they don't have the necessary parts?
I've never had one alignment shop correct the shimmed adjustments when they were out of spec. I have received full refunds twice now when I demanded they prove they attempted to meet specs and the bolts were fully rusty and untouched. The computer print out shows the wrong settings and an "*" next to every out of spec condition. Next the story is "you have a beat up forty year old car that can't be set". You can have a brand new everything in the front end and you'll still hear that advice. Well, they never tried, because there's no profit in an hour spent on one of these cars. They can "set the toe and let it go" on four others in the time it takes to do this job properly. The new cars mostly don't lose caster and camber setting that much and when they do, they are never put back right unless you find an exceptional shop.
I had a problem with our Ford once and it required a camber kit installed for the rear. It cost two trips to the alignment rack and four additonal hours labor to install $30 worth of camber kit to fix the distorted rear end. The front needed the top strut drilled and relocated. It was worth every penny and I had to call many shops before I found one who would agree up front that all four wheels would be correct when the car left their shop. The difference when they were done was the front steered the car instead of the back. That car is nimble now instead of dangerous.
You can set toe in your driveway with a wood trammel and a tape measure. Why spend $80 bucks for only that?
