As far as performance goes, z28>z32, especially when mods are added into the mix.... The camaro is easier to work on and mods are going to be cheaper. Plus its na so it will be easier to maintain. You can make both handle well, and its up to you to decide which one looks better to you.

I would get ws6 like jitb posted and put some concave volks on there. Black with a yellow lip.