Saw this on ebay, what actual part does it replace on a turbo 350Z, and why would you want it?
Ebay description:
This is a prototype part from Samco for the 350Z or G35 running Greddy Turbo Kits. This intake hose is 5ply silicone and includes the vacuum ports for a better flow over the stock intake tube.

Color me curious.

 

Looks like the one that goes to the TB? maybe you have to shorten the aluminum greddy tube?

 

samco make silicon hoses that are preformed to exact OEM shapes.

They withstand more pressure and are "pretty". If you are all about engine compartment dress-up and want to add a little more durability, then get them, along with the rest of your coolant hoses. You may also want to check out some Pi-Thon hose clamps to finish them off.

Cheers, ted