As flawed as they are, I'm a fan of the infamous "for 68" kits....I have the Firebird and Camaro from my childhood, and picked up an Impala a couple of years ago. That Impala looks pretty strange as-is, so I dug out the custom vinyl-look rear window/trunk overlay from a '66 Riviera.....pretty close fit!
Even if Round2 had the tooling intact for the Firebird, seeing it again would be a real long shot. Yes, many of "us" would like to own one, but "we" (who know what to expect and want one for nostalgia reasons) aren't a big enough group to justify the expense. If you want to lobby for something, consider the Hull Raiser with a different vehicle (maybe a 59 or 68 ElCamino?) in the spirit of the original
I wouldn't rule out the possibility of Round2 resurrecting an old AMT double kit (or creating a new one in the spirit of the old drag team kits), as I know they have tossed some ideas around for quite awhile....but the Quarter Masters is highly unlikely. The Firebird in that box was a re-pop of the AMT Firebird issued in '68; a woefully-inaccurate custom-only kit based on their '67 Camaro, not related at all to the promo-based MPC kit that was updated to the '69 in Glenn's post above. Sure, the original is rare, they sell for big bucks, and some of us would like to see it again (I know I would buy one)....but any money they would have to spend to bring it back would have to be weighed against the prospective sales (at a higher-than-normal price) and the complaints they would get from the folks who open the box not knowing what to expect in terms of accuracy.
Jon....check your '66 GT350 kits to see if they have louvers in the box. I only have one '66 (the original molded-in-black GT350H) and like Tom's, it came with a pair of louvers from the stock '65 fastback kit as a bonus.
I believe if you look at the promo/friction versions (same tooling) you will find pins that fit into those tabs in an attempt to minimize warpage. The '61 AMT promos/frictions (with a few exceptions) still used acetate plastic