I have the CT-7541. The width is perfect. It gives you a couple of inches on each side even with wide tires and spacers, so you don't have to be perfectly precise while loading the car. It's longer than necessary. I got mine with the axles set to the back position. If you currently use it for a Porsche, you might have that already. Otherwise, I think it's possible to move the axles because it's all bolted.
Here is a picture of my car on the trailer (before tying it down):
2005 Lotus Elise (yellow, sport pack), #94 SS
2005 Nissan Xterra (LSV)