You asked if there is a "special connection", and mentioned "if I bolted it onto the block correctly, then it should contact the cam and work". I really know nothing about the 6 cylinder motors, but I assume there is a pushrod for the fuel pump? Is the pushrod present?
From all of my observation and reading, it appears that the inline 6 engines have a fuel pump that operates by a cam that presses on the lever on the back of the fuel pump. There is no connecting rod (as I've been told exist on V8s.) I think the pump is installed correctly, just wasn't sure that it was until I pulled it all apart, tested it, and reassembled everything.
Here's a
picture of the pump showing the lever.
