That looks like a picture of the roadstyler bars. They were the only manufacturer I was able to find several years ago. They're still listed on the roadstyler website, but they say for 1800R/N only. I'd wanna make sure they really work with a C model. They mount to the fender rail and passenger peg mounts, I'm not sure what the model differences are there.
2002 1800R - Blurple with blue flames, mustang studded seat, muzzy's 2-into-2, hydroedge 205/65/16