Part number clarification

I have a 5.7 from a 07 charger, I have a milodon pan and pickup to put on, I am aware that you have to change the main stud and nut. From reading the forums I have found the following part numbers:
Main stud from a truck: 6506333aa, the corresponding nut is 6502756.

I have ordered some gear through wholesalemopar.com in the past (I live in Australia) and found them easy to deal with and quick. I ordered the nut and received that however when I searched for the MAIN stud it didn't show anything up? Can anybody clarify where I could get this?

ALSO I have a set of non mds lifters to install but am I correct in saying that you can't leave the solenoids in even if disconnected - you need to replace with the truck style plugs/grommets? If so does anyone have a part number for these as I can't seem to find one...

cheers, Dave.