Simple built of Warhammer tank Stromlord. It use creative engine but have enought place to use engines from TFMG or any other addon. It can be customized to your modpack. Have 2 working autocannons and twin rotary cannons.
List of mods:
CBC Modern Warfare: https://www.curseforge.com/minecraft/mc-mods/cbc-modern-warfare/comments
Copycats: https://www.curseforge.com/minecraft/mc-mods/copycats
Create Big Cannons: https://www.curseforge.com/minecraft/mc-mods/create-big-cannons
Create: https://www.curseforge.com/minecraft/mc-mods/create
Clockwork: https://www.curseforge.com/minecraft/mc-mods/create-clockwork
Valkyrien skies: https://www.curseforge.com/minecraft/mc-mods/valkyrien-skies
Create steal armour blocks: https://www.curseforge.com/minecraft/mc-mods/steel-armor-blocks
Create connected: https://www.curseforge.com/minecraft/mc-mods/create-connected
Create trackwork: https://www.curseforge.com/minecraft/mc-mods/trackwork
Create Interactive: https://www.curseforge.com/minecraft/mc-mods/create-interactive
If you want you can try these mods as well:
Create The Factory Must Grow: https://www.curseforge.com/minecraft/mc-mods/tfmg-unofficial-port-create-6
Create: Diesel Generators: https://www.curseforge.com/minecraft/mc-mods/create-diesel-generators
Create Radars: https://www.curseforge.com/minecraft/mc-mods/create-radars
Good luck and I hope this will helps you.