I would like to start cleaning up my engine bay on my 67. What is the most sensible way to clean up the inner panels/firewall. I can't totally smooth inner panels because the shock towers must remain. The top portion of the inner panels where the fenders sit onthe inside of the car are a little dented up. And while I'm improving the looks there, I would like to fill in any holes not being used etc.. Should I leave the large slanted factory stampings? Should I install new smooth firewall? Would you just add new metal over existing panels, or cut out old and install new? I definately want straight body lines when finished so I want to approach this in the right direction. Got advice guys on any of this?