OK, I'm the bloke making these, they will fit what I tell them to fit, if you want them on your golf trolley they'll fit,trust me. Every thing you see starts out as a flat sheet of aluminium or flat steel stock so there's no problem with fitting them to anything. There will be a cut out for a standard exhaust, which should fit most other aftermarket pipes, but there are so many options, I'll just have to see how it goes. Don't worry about the fit, any problems and I'll do it myself for you. Some bloke wants some for an XJ900, if he wants to pay the bill, I'll fit them. Any more question, I'll be only to happy to help, you never know I might have missed somthing? I'm off now, cheap French beer awaits