John Snr. with his broad knowledge and experience of 30 years, ensures that the team remains dedicated to the project at hand and informed through regular training and advice. Today we have successful operations in large re-manufacturing of MANUAL, AUTOMATIC and DIFFERENTIALS. While many people confuse rebuilt products with re-manufactured products, let us tell you what Sunstate Gearbox & Diff Service provides. The team at Sunstate Gearbox & Diff Services specialise in rebuilding, upgrading, servicing and repairs to your gearbox. Catering to 4wd, SUV and 2wd vehicles.