I normally like to run a shroud on my Slash and I love it. I have to see how the roll cage will fit under the new Mugen body I got. I'll be Shoe Gooing the new body 100% anyway. Usually they take a real good beating once meshed and Shoe Gooed. What i do want to do is just keep large dirt out of the ESC fan also. The shroud is great but I also feel it could cut down on air flow. On my Slash, it doesn't get real hot. I rather have the shroud on the Slash becase the chassis is a big bucket. The Kraton looks better for dumping loose dirt out the rear of the chassis. I can also take fast readings with the temp gun without a dirt shroud installed. My fans still get dirty in my Slash with a shroud on but its only fine dirt. Hmmmm decisions decisions.