Hehe found another one of your posts. Good questions though. The Sti name brand has been here since the early 1990s when it got it's start in rally racing. The Sti brand has mainly been sold in Japan with folowings in the grey market in Great Britain until they released the Prodrive Sti version a couple of years back. I think they had grey import stints as well in Australia and New Zealand until Sti officially introduced the cars starting with (I think) the version 5 or 6.

The Sti Impreza car line has been employed since the early 1990s with this current Sti being the 8th generation. But, this is the biggest engine installed in an Sti car since the 2.2l engine in the 22B.

Go to this site for some info. You'll have to sorta guess around if you are not familiar with the Japanese language. IIRC, they had a nice timeline of Stis showing where they started and how they evolved.

http://www.subaru-sti.co.jp


edit--- Yes, the Sti logos are usually pink. At first I thought it was some sort of funky looking light red or neon color..

Hopefully, this helps some.
Tim