This Eastwood Complete Manual Transmission Kit includes all necessary bearings, seals, gaskets, synchronizers, springs, and bushings needed to rebuild your Borg Warner T10 close and wide ratio with 10 spline input and either 16, 23, or 27 spline output shafts with cast iron or aluminum main cases. Casting numbers T10-1, T10-1B, and T10-1C. Designed for GM vehicles 1957-1965 except 1963. A detailed exploded view is included. Factory shop manual suggested - professional installation recommended. Made in the USA.