you can also get them with a "my word against your word" on an exhasut system.
If you install a system without any brand name markings then it will be difficut for them to determine that the system is indeed aftermarket, as long as the installed system has a modest tone. If it sounds like fire crackers in a coffee can then you'll be hard pressed to convince them that it is OEM. But if its modest sounding, like the Borla system for the SVT, then you'll likely have a chance.
Hopefully when CT resumes its emissions testing program it will be like the rumors say it will be. For newer cars all they'll do is a simple visual check to be sure the catalytic converter is there and then hook the car's computer up to a scanner of sorts. If there's no trouble codes then you're all set. I'm not sure on wether or not they will run a full viehicle inspection program like MA and NH have. All this is being done in an effort to save the state some money by privatizing the emissions inspections. But most of the private shop owners want nothing to do with it since the state is only offering them a small percentage of the funds required to start the program so most of these guys are not willing to participate. However, large corperations like Sears Auto, Midas etc. are willing since they are large enough companies to afford starting enough inspection stations to have sufficent volume of customers to generate profit.
Personally, its a stupid idea. IT was working fine when the state was running it. I hate politics.