The twin turbo cam is on the left, the 2.5 on the right. The intake turbo cam has a higher lift (.105") versus the 2.5 cam, but much shorter duration. The exhaust cam has about the same, with a .060" higher lift, but shorter duration.

Any idea which would be the better cam to run? I will figure out duration later.

Also, if the 2.5 cams are better, i will be running them in the 2.0 head, because its already plumbed for turbo lines!

http://www.vincentfurniture.com/photos/subaru/camcomparsion.jpg

i could be completely wrong but i remember reading in some turbo book that a shorter duration is used to prevent blowby of the intake and exhaust gasses.