Kitbashing ​

Open Standin Outliner Window / Standin Outliner.

Select Static meshes you want to make a kit from.

Select Create in the Standin Outliner.

Pick Near Pipeline.

Build Standin

Save to package.

Select path.

Repeat for another kit

Bash kits together to form new kits.

Add casters. Optional Material Merge

Adjust Output Texture Resolution. Optional Material Merge