https://www.lrsoc.com/forum/forum_files/ServiceBulletin2A6.pdf 5191 – 2/A6 ENGINE: REPLACEMENT ENGINE FOR SPECIAL VEHICLES (Welder; Fire Engine)
https://www.lrsoc.com/forum/forum_files/ServiceBulletin5038.pdf 5038 – LAND-ROVER AND NUMBERING (additional info)
