[Igotta P]

I have an 18' x 8' 6" enclosed. Not a V nose. I pull my Backdraft in it with my 6.0 liter Escalade. When bucking the wind, I wish I had more horsepower. 18' length is nice, but not absolutely necessary. 16' would probably work just as well. I wouldn't scrimp on width though. I recommend 8'6" so you have plenty of room to drive on and get out. Cobras are expensive. Even minor body damage sucks and is expensive to repair

Do yourself a favor, get enough trailer, and get enough truck to pull it.