Special Regional Production Cars, Factory Specials; I Need Your Help!

For sometime now we have been trying to track down the straight scoop on the 1968 Mercury Cyclone GT 500. We still aren’t there but get closer with every response from you readers. One very interesting development has occurred; while searching for info on the Cyclone GT 500 we were told about a 1968 Mercury Cougar GT 500!
We just added a page with that info on it today. Again, we ask that if you have any additional information on these cars please pass it along and we will share it with our readers. Of course photos are extremely important in documenting these cars. We can write about them all day long but we need to see what they actually looked like.
All this interest in these two cars got me thinking about the other Regional Promotions I know about. There are the California Special Mustang from 1968 and the very similar High Country Mustang (Colorado Special), the 1970 Mustang Twister and its sister the 1970 Torino Cobra Twister. I know there must be more.
We are going to launch a new page under our Feature Car section called Factory Specials. This is where you come in. I need you to send me as much info as you can on any Special Factory production vehicles you remember and can document. This is for the standardly accepted Muscle Car Years between 1964 and 1972 but excludes all Pace Cars for any race. The Factory Specials have to have been produced in multiples (no one-offs) and available through any dealership nation wide or limited geographic region. We will also include the NASCAR aero cars such as the Dodge Daytona, Plymouth Superbird and Ford Talladega.
What do you remember and what do you have? To me it seems that the Blue Oval folks did much more of this than the Bow Tie guys or the Mopar folks.
Here is the list we have to begin with:
Ford:
1968
-Mercury Cougar GT 500
-Mercury Cyclone GT 500
1969
-Ford Talladega
-Mercury Spoiler; Cale Yarborough and Dan Gurney Specials
-Mercury Spoiler II; Cale Yarborough and Dan Gurney Specials
1970
-Mustang Twister
-Torino Twister
Mopar
1969
-Dodge Charger 500
-Dodge Daytona
1970
-Plymouth Superbird