Jim's right, if you are no longer running bias plys the stock alignment is not applicable (although many unknowingly still use it). As a matter of fact, it's quite the opposite.
I wouldn't worry about the caster affecting stiffness unless you are running non-powersteering. As Jim said, shoot for as much caster as can be dialed in with stock arms, aim for about 1/2° negative (stock is positive)and about 1/16 to 1/8" toe-in.
Toss the factory alignment specs in the trash.
i had my alignment done 4 years ago using stock factory specs and i have had no tire wear problems or handeling problems?what am i doing wrong?
The car will still wear correctly Terry even with the factory alignment. As for handling and highway stability.... it's a matter of "you don't know what you're missing."
