They Have Many Aluminum Parts for the Evader.
http://www2.towerhobbies.com/cgi-bin...I=DTXC0062&P=Z
That site is about the only place I have found Upgrade parts. Unless you start to just TRY parts from other RC's.
I just purchased a bunch of the aluminium parts from TowerHobbies and once you put them on man it looks sharpe.