Compared to the 2004? Is there any way to upgrade it then?

I'm sure doing a little search might help.

couple? lol. i wish i had a couple of G's =D

better interior, 18+ hp for the 05 6mt, 19 inch wheels ( which i must say are the sexiest stock rims ever ) and no brembos for the 05 6mt's

yea so go to infinitinews.com and check it out yourself

hahahaha, yeah man definately should have researched.

to get you started:
upgraded interior
18 more HP for manual trans