The easy answer to "What is a Special Edition" is:

A special edition is a base Roadster with RED paint, satin side stakes, and satin door handles.
The rims were from the SRT6 (or sure look like it).
One odd thing is, the SE was available with an Automatic as an option - the Base was not.

The SE had:
The Base's el cheapo sound system
The Base's Manually adjustable cloth seats
No Chrome door trim
No fog lights
All the black trim of the base

In pictures and in person, I noticed that the SE had a deeper Red color than the limited.
I had a picture of my red limited sitting next to an SE on a lot and you could see the difference.