Knox carpets are pretty good, a mate just did his skyline with their stuff and it looks quite good.

DO NOT use All Car Carpets. I used them for my ute, and I they provided NO confirmation of order, NO notification that it had been sent, I got no parcel tracking info, and the carpet was delivered to the wrong address entirely, despite me confirming all my details were correct, and the only reason I even saw the carpet, was because the lady who ended up with my carpet (it was just dumped in her carport while no one was home) was kind enough to try and track me down via the white pages. She could have just popped it up on gumtree and made a profit (the morons printed the make and model on the back of the carpet to make it easy to do this)
On top of all this, the section they provided to fit the area behind the seat rail was not even close to correct, and had to be almost destroyed to make fit (all the overlocking had to be cut off to make it fit)
I raised all of these issues with the company, and apart from blaming aust post for the delivery stuff up, they have never offered to try and make anything else right, or even admit that their template was wrong for the rear section, so avoid them at all costs.