Ok I found the article in May 2001 Wheels but it's not the detailed one I remember reading.
It just says that the Sportivo starts out life as a Levin. Then before it leaves Japan the turbo, heat shield, new exhaust manifold, new clutch, brake pads, high capacity injectors are added. Also mentioned that prototype testing revealed high oil consumption so a cast alloy oil seperator was added.
Once it got to Australia the bodykit and supsension and 15" wheels were added.
Doesn't mention anyhting about a ECU. Maybe that is because the 7A might still have an airflow meter instead of being map sensor. It would paid to call up Toyota and find out exactly what is in the 7A-FTE kit. That will tell you straight away the parts you need.