The largest he sells is 24" X 72" which is only 2' X 6' which is an option but it's a little short and I would have to cut the width somehow, not sure if you have to cut it a certain way to not damage the mat or if it as simple as just using an x acto knife, Still an option though!
It's not the largest in any width, as he has entire rolls listed for sale (32' or 40'). He just doesn't have any pre-made 8' mats listed in any width.
But he will make custom mats per request (chose dimensions, color, textured or smooth surface, kit or not).
There's no software tool for custom orders however, so you'll have to make contact with the seller. Send an email and he will respond in a timely manner IME (excellent communication when I bought mine). Here's the store again (
canvu0_0).
Since that seller happens to be in Canada, I'd think it easier and cheaper than a US source. Seriously, this is very likely your best bet on cost for an excellent quality mat.
BTW, if you do decide to cut it on your own, there's no issues with direction. Just need a good sharp pair of shears or razor knife (fresh blade & puncture first with the point, then cut). Dave even has a video on this somewhere.