mod_config.json.
Built-In Storage
What each helicopter holds with no extra modules fitted:Extra Cargo Modules
Set how many extra modules (0–10) each type of helicopter gets, under thecargoModules section of mod_config.json. All of them default to 0 — no extra storage until you ask for it.
Module size
Each type also has a size setting in the same section —cargoModules.md500.cellsPerModule, cargoModules.mh6.cellsPerModule, and so on — which sets how big one module is for that helicopter. Use it when 1,000 slots a module is too generous for your server’s economy.
The module count is also kept in step with outside changes. If an admin tool (CFTools, VPP, Community Online Tools) force-fits extra modules onto a helicopter, the mod puts your configured number back about a second later.
Example
To give the Blackhawk 3 extra modules of 1,000 slots each (3,000 extra slots), in thecargoModules section of mod_config.json:
Locking Cargo For Seated Players
The built-in storage is unaffected either way — only the extra modules are hidden.