www.3si.org active site for Stealths and 3000GTs
. Just a word of advice, got here and go to the forums and click "search" at the top and search for your answers first. We don't tend to respond well to new people asking questions that they could have gotten answered through searching. I'm not supre familiar with the TT cars but if the last owner had any sense AT ALL, you will be able to tell what mods have been done. I severly doubt there are bigger turbos without some fuel mods and definantly intake and exhaust. Not to mention a SAFC and gauges. But like I said, go to 3si and you will be able to find all your answers. Sorr I couldn't be more help.
Oh by the way, congrats on the car and welcome to the board
-Jeff