I don't have one, but please grab a C160 6 speed with it or at least the C56 gearbox. The stock celica gearbox (C52) has too long gears imo. I still have the C52 gearbox in my 1998 ST celica, but a C160 is waiting for me

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With the C52 i'm doing 120 km/h on GPS in the second gear. In the 3th gear 170 km/h. 4th en 5th i don't know because of the speed limiter @ 190 km/h. Check my video on youtube:
http://www.youtube.com/watch?v=fjBc1_DKWqAWith the right gearbox it's a perfect engine for the Celica. Light, good on fuel consumption, good power, etc. I think a 3SGE would have diffciluties staying ahead of the blacktop. Especially till about 160 km/h.
In Belgium someone is offering a Blacktop engine for a Celica ST. It's complete plug and play. I can give you his email if you like?