
Have you tried Barnesbrook? Dave from there doesn't need to see your car, makes cages for a huge range of vehicles, will send you a template to try out if you are not sure about the size and offers an all round excellent service at reasonable prices. His crates also do what it says on the tin - they are rattle free which is a huge bonus if you do a lot of travelling in your car.
I had a generic crate similar to your link which was fine as a temporary arrangement when our rescue pup was small and we weren't sure of his final size - he had absolutely massive paws - but the rattling drove us crazy and if you had a sensitive dog it could cause problems.
The crate I ordered from Barnesbrook was actually made whilst I was dithering about so when I finally decided to buy it the crate was there waiting for me :-) I was also told that any problems with the size and I could return it for a full refund but it fitted like a glove. I know he supplies some main dealers with crates so will sometimes have a supply in stock although most of his crates are made to order and you can have virtually any shape and design that you need.