Hot Rods Floor pan needed

I'm building a 63 Buick special g***er. All the suspension is done. I used a speed way kit in the front with a 9" rear with ladder bars and a watts link and qa1 coil overs. It also is running a blown big block Chevy with a 4l80e trans. I need to replace the floor pan and trans tunnel. It was kinda ****py when I got it. It has a boxy tunnel and flat sheet metal on welded in it ( before I got it). I need to know what kind of car with be close so I can order a new one. Your guys help would much appreciated

 

try www.emsautomotive.com look under special applications