well... a few details.
1st gen 3sgte ONLY (in the US) ever came in the AllTrac Celica. this had a small air-to-water heat exchanger resting over the head of the engine. later models of the AllTrac Celica had either larger air-to-water heat exchangers OR air-to-air intercoolers (depending on which country its from).
the Mr2 uses an air-to-air intercooler setup.
here are examples of each:
1st Gen 3sgte - USDM AllTrac Celica
2nd Gen 3sgte - JDM AllTrac Celica
2nd Gen 3sgte - USDM AllTrac Celica
2nd Gen 3sgte - USDM Mr2 Turbo
hope this helps.