I am currently in the process of swapping my 99 from a 47re automatic to a NV4500 manual. I bought an 02 wrecked 5 speed truck for the swap, it had all of the parts needed for the swap. Today I pulled the transmission out of the parts truck and noticed that there are no vacuum lines on top of the transfer case of the 02 parts truck (I’ve tried to attach a pic). Is this because it does not have the center axle disconnect like my 99? Would it be easier to keep my transfer case I have in my 99 and just change the input shafts, or would it be easier to bypass the CAD somehow and use the transfer case from the 02? Thanks!!