Hi, I just want to start a discussion that will put into place a rating of the different gearboxes you can use in an impreza!

Here is my suggestion after searching different forums:

(I use PPG as the standard for uprated gearsets, since it seems to be the recommended gearset among scoobynet-users, http://www.ppgearbox.com.au )

From weak to strong in following order:

1. Classic 5 speed
2. My01/02 5 speed (has some unspecified improvements?)
3. My03-> 5 speed (has wider gears much like the RA)
4. RA 5 speed
5. New age STI 6 speed box with DCCD
6. New age STI 6 speed box without DCCD (well, the dccd is another problem)
7. 5 speed box with PPG helical gearset
8. 5 speed box with PPG straigth-cut gearset (straigth will not twist the box)
9. 6 speed box with 5 speed PPG gearset helical
10. 6 speed box with 5 speed PPG gearset straight

Feel free to make other suggestions and rearrange, or just fill in the missing information. I guess this forum has all the combined experience that is needed!

Ps. I have been told that the MY06 5 speed has some improvements too? And what about the american 5 speeds?