There are three versions of the MST ’07 Buffered Multiple; the newest version is 4HP. The original version is in 7HP and the second version is 8HP. They all function exactly the same. You can easily tell which version you have: the 7HP version has two PCBs and is wide, the 8HP version has one PCB and is wide, and the 4HP version has two PCBs and is skinny. Take a look at the Visual BOMs below for picture references.
You can find the 8HP and 7HP BOMs below. The 4HP BOM can be found HERE.
8HP Buff Mult BOM:
7HP Buff Mult BOM (original version):