I also believe they are EMGO's (Sprints sold by newbonneville or the teardrops sold by Bela Corse).
The quality of the EMGO's in my opinion is great. I've had mine for almost 2 years now and have experienced no problems with them (no rust, pitting or flaws in the chrome). They are pretty loud with an aggressive growl that in my opinion really brings out that 360 sound of yesterday.
Shorty