I made some textures: http://imgur.com/PahuclE
http://www.mediafire.com/download/w5x8494atm56nyq/textures.zip
Mind saying what direction you want all the textures to go in so that I can create more textures? For example, what sort of material would the motors use? Will you make them animated? I also don't really know what effect the upgrades will have on the texture, mind posting example pics for that?