He had a splitter like you showed in the other post that looked like yours... It's used to split the single reservoir into a dual reservoir...
I decided to get the 67 system for my 66 Valiant wagon and lines to do the same thing, as I felt it was better to do that way. I met him at a meet in Indy and the Fine Lines display was right next to him... I got my brake components (master cyl and prop valve) from the Ram Man and then got the mating lines from Fine Lines...