the k member you link to Louis...is probably the old Cap K member that was available with the rack n pinion steering...dont see those photos on Mancini web site anymore..
What's funny is the sales guy at Mancini says you can order it still through them.. I called QA1 and they said nope and that they were having geometry problems so they no longer offer the older version. He did say that there will be one in the future once they get it figured out.