My pipe is aluminium, and its oval, I have a 76mm Silicon Degree bend on the left connecting to airbox and a 76mm 90 degree bend on the right connecting to throttle body.
I have my breather from the engine rocker cover (cam cover) and the other thing that Ive completely forgotten what its called, both connected and another very thin pipe coming off the 90 deg bend.
I cannot get pics as the car is not with me at the moment, but will be with it on saturday if you wish for them.
Si