I v been checking this Japanese Website for few weeks now and i think you guys should have a look.
http://toranoko.qee.jp/overtax/
The Celica member of this website modified his ST205 from scratch as he said (its obvious) having also installed HKS 2.2L Stroker kit
Few photos:
Specifications Section:
Specifications
Check out also the videos on the track!!ST205 with Skylines GTR!!!
Videos