Sorry if this have been covered (tried search, no luck).
But I just wanted to know what the differences are if any at all.
Thanks in advance.

 

Nothing major that I know of... I think the shape is slightly different but they are both basically just a plastic pipe without the resinators on the stock G35 intake.

I have the Stillen one because it was cheaper, no complaints so far.

 

That's what i figured, I have a amazon gift card so i'm just going to order one off of there.