It didnt take much did it?

 

Looks like you got it done but ill post this link just for reference. i had to do the same thing on my 94 Firebird to fit 97 Camaro wheels.

97-02 f-body "used a smaller hub center on the rear axles."
97-02 f-body "wheels were made with a smaller hub opening"

http://shbox.com/1/4th_gen_tech2.html#wheel_mod

 

We had to do it on a set of WS6s I had for my TA. On a buddies 94, we had to do the same thing with a set of wheels from a 97.