As far as I know there are only 2 people who actually doing supercharger and TRD
is not 1 of them. Blitz is doing one and Magnacharger is doing the other. Blitz SC Celica GTS has already been to shows, I actually took a picture of it in a muffler shop which shows its nearly completion just waiting for reliability test. Magnacharger is doing one for Hotchikis Celica GTS it is still in the working stages, but I think Magnacharger one is more hardcore SC unit because they ceramic coated the whole engine for Hotchikis... As for TRD
they always claim something they never deliver, I will believe they have one when I see it in either sitting on a celica or in parts department being sold.