For a 2nd gen? I'd really doubt that. The rear axles interchange between the camaro and the Firebird. I believe the front subframes do as well. So, all things being equal, they'll have the same track width/length.
And don't forget, its really only the body lines that are different between the 2 platforms. The floors, firewall, front & rear windows, roof, trunk lid all interchange. IF you really wanted to you could unbolt a TA fender and bolt a Camaro fender in its place. The body lines would be completely off but dimension wise it would fit.