Early Thule, Volvo did a volvo branded one as an accessory. Later black ones work too. They come in two heights, shorter is plenty tall enough. Missing rubber can be fabricated from a 150x150x1.5mm EDPM sheet because replacements are NLA.
Lots of sandpaper, wire wool and autosol to get this shiny, plenty far to go before it's mirror polished.
Use 126cm bars for a 240. They pop up on fleabay from time to time at varying prices, from £20-100, from what I've seen.
Enjoy lunch.