Yeah but I’ve not got the roof rails to fit the bars unfortunately… you can get them retrofitted but it’s megabucks
Yakima once did a rack for minis without ‘naked roofs’, but they don’t do it anymore and weren’t common in the U.K. anyway. Thule don’t do them either.
Ah! Sorry I misread that.
Fwiw my folks used the OEM bars with the (thule) OEM box and they worked well together.
Like these
https://www.ebay.co.uk/itm/285914957541?
Looking at the universal kits I don't see why they wouldn't be fine.