I agree with that, Stainless will typically gall and seize, especially when in contact with Aluminum. That's why I was wondering if anybody had a connection for the brass ones, or even a price so I might know what to expect. Seems like a great idea, if you can find the product somewhere...ahh, the joy of supply chain issues, lol

 

14mm compression fittings fit on the radiator (some sanding required, because the tubing is about 14.2mm OD). Check out McMaster-Carr. All other parts (hoses, adapters) you get from summitracing. Should be possible to build the lines for under $200.