Ford Chevy T5 World Class Transmission 5-Speed Transmission 3rd Gear This Cluster fits Various Chevy & Ford World Class Application; Camaro, S10, T-Bird, Ford Mustang SVO Tooth Count 30 The T5 Transmission will be cast 13-52. Please identify what you have! Non World Class units have all brass synchro rings. That is not what we are selling here! World Class transmissions have fiber lined synchro rings for all the synchro rings except 5th. This 3rd gear is for the World Class type.