I have an 06 6.0. I was replacing my standpipes and dummy plugs with an xdp set. I removed the rear driver side standpipe and its not much longer than the dummy plugs but the standpipes i got are about 12" long. I've heard of the standpipe coming apart in 2 pieces but this one has the orings at the bottom and looks complete. Is the pipe I pulled out correct for my year? An old style maybe? I'm not at the vehicle but before I pulled this pipe I noticed the pipe and plug on the drivers side were 2 different sizes. The pipe i pulled was 12mm and the plug was a smaller Allen size. I haven't pulled the plug yet and I haven't removed the passenger side cover yet to compare.