Linhof Technorama 617 S III - which RRS camera plate?

Hi all

First time poster.

I am planning on buying the RRS BH-55 ball head for my Linhof Technorama 617 S III.

Does anyone know what the best camera plate is for this camera? Ideally I was looking to get an RRS plate.

Otherwise are there alternative brands that make a arca-swiss style plate suitable for the linhof?

Any advice would be much appreciated!

Thanks