You're definitely needing a some floor pieces, but the pic of the long doesn't look all that bad to me (and I've seen bad ones...too bad they're mine
). Mark Bland (Engman) makes a great inner long/rear firewall re-enforcement kit, and Brad Mayeur (can't recall his 'club' name) has some 'bad-ass' outer long stiffener kits. If you're planning on replacing them with stock parts I believe that the general concensus is Restoration Design:
http://www.restoration-design.com/I've heard good things about their parts, and I'll probably have some first hand knowledge about their stuff before it's all said and done.
Wouldn't hurt to do a search on long replacement, I've seen quite a few
well photographically documented repair threads listed here.
Good Luck!
Kevin