Dude Man wrote:
Does anyone know where to get parts like these ? I have looked for hours,and have found nothing

With the exception of the nuts and bolts and aluminum tubing, I seriously doubt you are going to find those parts anywhere.
I'm pretty sure that most of those parts are custom fabricated or rapid prototyped from a custom design. The pelvis design looks like it may be laser cut.
If you have computer design skills you might be able to replicate some of them fairly closely and have them machined from your cad drawings, which is probably what they did.