Hello, I'm new to this forum. I saw something like this on ebay yesterday, From what I can deduce the system consists of 2 mufflers mounted side by side with a crossover between them, one of the mufflers has an electronic butterfly in the body. When the butterfly is closed all the exhaust gass is forced to flow through the one muffler when it is open it flows through both mufflers for less restriction (apparently variable too). At a glance it looks like it would be compatable with your XR6T's, however Unless there was a 3" version I couldent see a notable performance gain I'm not to sure if I can post the link, so just go to ebay and type in "Powerpro TWIN EEVC fully adjustable performance exhaust", or anny 2 of the above words should do it. I have been using this forum to do bit of research on the xr6T's, Lots of info (info overload) here, so yep. Thumbs up too all those contributing members. I Just have to wait untill a 6spd manual ute comes up for sale in my price range. Luke