75 Camaro swap ideas

I'm the second owner of a 75 Camaro and have been through it 2 or 3 times (engine, trans, rear end, etc.) I'm wondering how much of the running gear and suspension from a late model Z-28 (96 and up) would work on my old Camaro and I'm also wondering about the a/c, steering box and other accessories. Also, does anyone have an idea of the cost involved and is there anyone in or near Texas that specializes in this kind of extensive swap.