Ok so I just bought a z-tube, poped the hood to install it, and the tube that's in there lookes pretty much identical. The only difference I noticed was the material it was made out of.

I don't know what the stock tube on the g looks like, and I only got my car 2,000 miles ago. Are the tubes noticably different?

 

 

thanks for the pic! I can't see it though because my work computer won't display pictures in forums

 

you wanted a written description???

 

Checked the pic at home. I def already have a Z-tube installed. Thanks for the help pattyskin!