Newest Isuzu five-star Giga (VC61) is still good even added aftermarket parts, especially Webasto air conditioning unit at bed space. But when isuzu collaborates with UD, Giga Tractor fully left its original platform. 6UZ1 still good enough, but Smoother-Gx transmission must based on ZF-AS Tronic 12-speed AMT (12AS1310) for two pedal operation in both Auto or Manual mode. Is 6WG1 15680cc still available for 2023 Giga (cargo, dump, G-Cargo, crane & tractor)? 2023 Giga Tractor must consistent to use 6WG1 & ZF-AS Tronic for better performance & fuel economy