For those in the 1:25 camp, the offical MAD website image and info on the '79 Notch- http://www.madmodeling.com/store/ccp0-prodshow/79muscoupe.html
I have not yet had the chance to have one in my hands, but I think this is the one I'm getting. It appears to be a pretty complete transkit, its 1:25 (making it more consistent with 90% of my other models), and represents the earlier style nose and taillamp treatment. Nothing against the '87-up styles, I just prefer the earlier designs myself.