yeah i did notice that too, but at the same time if you call yoshi for advice or instruction on the ds they are worthless and their service sucks!!

and I'm serious dude, I just ordered a graydon! hope I get it for SL.

 

I'm pretty sure I've heard that the Supertrapp disks can be used on the Graydon. With those you should be able to tune down for low/mid power, and have a spark arrestor to boot, and with 18 disks have good power on the top.

Graydon would be my first choice if it only had a place to put the stock heat shield.

 

the disks work great for low end on the graydon.

 

yes I ran 18 disks on my RW pipe, and will on the graydon to boot, they have the same kind of end cap adapter available, as well as open nozzle with removable screen, your choice.
as for the heat shield, I can leave the stock one on the stock headpipe because I'm getting the slip-on. I won't give up a stainless header that positively clamps the joint up front around a gasket - my RW joints all got water in them every time I washed the bike or crossed a creek, and rusted. but I'm okay with the ceramic tailpipe on the grayodon since it has the aluminum muffler that won't get chipped up by my roost and rust. its that gravely sand the badlands that does the chipping, not everybody would have that problem.