Let see
-rear discs
-hood scoop (for turbo)
-momo steering
-World Rally blue
-longer gears
-limited slip diff
-VTD(4EAT)
-heated seats
-no door mouldings
-6CD indash
-keyless entry system..
-sport suspension vs raised
If your really looking to build up a car why not step down to the TS and build that, is essentially the same as the outback except for no fogs, normal suspension, one color, no rims and still has rear drums and same 2.5L engine.
Hope this helps, actually most of this came from a brochure, except for the gears part thats in MY02 Owners manual.
Just to give you and idea
TS/Outback 1st 29 mph 2nd 48mph 3rd 68
WRX 1st 35 mph 2nd 61mph 3rd 87
[This message has been edited by Danger (edited May 13, 2001).]