yes they do have the cab vents. that install with the bed rug looks real nice!

i would definately vent to the outside with a blowdown tube or some braided stainless line if you have it in the truck.. had one of those disks blow prematurely with the car sittin in the sun with the cloud of **** the blew out from under it i couldnt imagine that going off while your driving! talk about dangerous!

 

what about under the truck where the spare tire goes?