Carrier Command: Gaea Mission: List of Upgrades
Even though the dialogue in the Campaign suggests otherwise, the newly acquired upgrades are automatically retrofitted in previously manufactured vehicles. 
Walrus & Manta
- Volcanic upgrade
- Icelands upgrade
- Marshes upgrade
The Turbo module boosts engine output, causing an increase in speed for a short period of time.
The Afterburners inject fuel into the Manta's exhaust, increasing speed for a short period of time.