??? is there an 340 six pack emblem?????

Doubtful that you're gonna find them either since the only the only factory built cars with 340 six packs (as opposed to being 340 six barrel-equipped for you AAR fans) were Challenger T/As and they had large decals on the fenders and not the badges that you seek. Unless somebody in the aftermarket has created them, I suspect you're out of luck. Sorry.

One other thought just came to mind; anybody remember what was on the Mr. Norm GSS cars so equipped?

Ray