This kit fits all the delta box models with 136 and 129 models with the oem tunnel extension. The side plates sit on the extruded tube and then 2 holes are drilled into each side to attach it. Rack retains seat trunk access and does not block tail light. All mounting hardware is included. Presently do not have any complete 136 models in shop to take photos of at the moment. Photo shows an early prototype so design of sides is different but depicts how it gets mounted.
Note: exhaust soot will accumulate on the rack. I have plans to work on some exhaust tips to redirect the flow but have not developed them yet.
I also anticipate that this will fit the 16-18 Vector XTX despite it using a slightly different tunnel extension. I have not had access to one to try. If someone has one and is willing to do a test fit please reach out. I will cut you a deal on the kit in exchange for your help!