Volcom you should only have three total lines in the back,(two going into the LSPV and one comming out that goes to the rubber flex line) tie the bottom line (the one furthest from the body of the truck) of the two lines running along the frame on the rear into the hard line that is comming off of the flex line mount.
I noticed that your kit came with one female union, your going to need two so if it comes with a second then your golden. but use the female to female union to join you PV to the master cylinder and to the factory hardline under the hood of your truck (then this part is done)...
then take the second female to female union and tie the lines up in the back like in the second picture.
Your return line needs to be plugged some how you can either pinch the line with some vice grips or get a plug or do the sloppy set up i did in my build up
Good luck man i'll check this post frequently for updates