In your case I would definetly reccomend the complete toeboard pc. (full width) Assemble it with sheetmetal screws or rivets first so you don't have to grind welds to tweak it. Don't forget the bracing and make sure you fit the doors and even the clip before welding it up. That column/dash fit tells you alot about where it needs to go. Good luck.
Curt B.