Everything you need to know is in the first post under submissions.

To my knowledge..the Heads on the sub-5 are not interchangeable with regular joes..(smaller holes) however, if you use a drill bit , they work fine..with joes.. Body parts I havent worked with but it doesnt look that way..they're sort of stiff in a way they move

i actually just googled it.....its a custom someone made. i just liked it so I put it up

Were is that roadblock in your avatar from ??? Looks killer