I'm hoping RPM Works can do it, but the link on their site for ordering specs is non-existent, so I sent them an email, but no answer yet. I'm sure there are others as well. I'd prefer not to get a pipe off the shelf. I have a bunch of old 250/300cc dented dirt bike pipes as well as a spare DG that I'm hoping I can cut up and cobble together into the configuration the pipe programed spits out. If I can and it works I may get a nice one built. I may contact Dyno Port as well. They've made them in the past, but they might not do a custom, but you never know, as they say in Spanish: "With money dances the dog"