All the CSX-Ts were Dodge-stock powertrain 2.2 turbo I blowthru, with one piece intakes and no intercoolers. They were strictly a cosmetic package including the ground effects package from the 87 CSX, the aforementioned LeMans wheels, a steering wheel and a set of badges (dash plaque, CSX-T or Shelby dash badge for the passenger, and doorsill plates).
I don't know of a definitive online source for this information, but I do know the Shelby Dodge community has a good working knowledge of the cars. Check
www.sdac.org/links.htm for some very good websites about the cars.