The part you want is LG1025 + any adapters (e.g. Canon DSLR ring) you need!
http://www.bhphotovideo.com/c/produc...is_Guider.html
A quick search reveals they may have stopped making these to go for slim line bodies - so check on astro sales / classified for a second hand one also; some dealers might still have unsold stock; they are a great unit!