340 Wedge?

That's what I've been finding myself, the V21 perfomance hood treatment seems to be the only thing, can't find anything different mechanically, aside from some articles I've read, that state "Wedge" Duster was the fastest and most powerfull Duster built with 511 total production.

Although I am aware that all "LA" engines are a Wedge design, I thought there might of been something different in the valve angle grind, cam lift/duration, etc...

Apparently not, seems like the sticker makes it go faster, LOL.