A common question we get from people when installing the front upper a-arms on their 1993-2002 F-Body Camaro and Firebird is about the a-arms not quite lining up with the vehicle mount.
This is caused by tightening the ball joint on to the a-arm before installing it on to the car. Keep the ball joint mounting bolts loose until you have the a-arm mounted on the car and then tighten the ball joint bolts.