I know nothing about the cnt but the nameless have options. Muff delete, 4in resonator, 5in resonator, 3in tip, 3.5 tip, 4in tip, single wall, double wall & burnt. I got the 4in double wall not burnt tip with a 4in resonator (nameless). Wish I got the 5in res but it didn't sound as loud in the vids I watched. The muffers in the pic you posted looks just like mine but w/burnt tips.
https://cdn.discordapp.com/attachments/117386529369882625/411244783357657098/20180208_131810.jpg
https://cdn.discordapp.com/attachments/117386529369882625/411244783357657098/20180208_131810.jpg