Titfield Thunderbolt Pack 1.0.3 is a release file of the Minecraft resource pack The Titfield Thunderbolt (GWR 14xx)- IR, made for Minecraft 1.12.2. It was published on June 6, 2021 and is 19.6 MB in size. For the full description, screenshots and every other version, visit the The Titfield Thunderbolt (GWR 14xx)- IR resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.