You need the 10's as shown below
The numbering of the LMTV 1078 manuals from 1998 is that manuals are all:
TM 209-2320-272-##:
-##: = below
10......... is Operations
xP........... is Parts AND Special Tools
34........ is Maintenance / laymen's terms- General Service and upkeep
20........ is Service -Repair manuals / for us tractor guys..... Factory Service Manuals
A hint: Look at the data plate on your equipment. Write down the modal number and NSN. Look at the cover of each TM. Find the proper model number and NSN. That book is for you. Then look in the section of the Parts Manual under Usable on code. Find the usable on code for your equipment and write it down. When ever looking up parts for your equipment, make sure the Usable on code, (UOC) listed next to the part you are looking up is the same as what you wrote down.