Difference between evo 8 and 9 turbos (pics)
 

Evo 8 turbo:
Compressor cover reads:
49378 -01560
TD05HR-16G6-10.5T (or -9.8T for 03-04 turbine housings)

http://scheides.com/misc/pics/evo/ev...compressor.jpg


Evo 9 turbo:
Compressor cover reads:
49378-01580
TD05HR-16G6C-10.5T

http://www.scheides.com/albums/bret-...8433.sized.jpg

If anyone has anything to add, please feel free...just wanted to post this as an FYI for turbo shoppers out there :)