Arclite Siege Tank from the Starcraft 2 Alpha
Complete tank, siege morph, and siege modes.
I also removed the black smoke that nobody liked :)
KORroy made the textures and they make the tank blend in perfectly with other terran units. All credit for those goes to him. http://cafe.naver.com/star2model.cafe?iframe_url=/ArticleRead.nhn%3Farticleid=424&