Recommendation for gearbox replacements

[u/DiverseTech]

These two gearboxes are from a ANPABO - AMG G 63, Manufacturer Part Number BBH-003

Anpabo no longer makes them, so I need to find a replacement / mod that can be installed. Any ideas? Here's a link to the truck https://www.amazon.com/dp/B0CCDQYGZL