We just finished up a 1972 Chevrolet dually 4x4 built with modern gm daully 14 bolt full floater rear end Cummins 24 valve diesel to Allison transmission automatic Dana 60 front end working on another one now thats going to be built LS 6.2 making 550hp pre turbo. Engine has 20,000km or 1 year. Warranty Allison auto is also covered for the same 20,000km or one year. Everything is brand new. Contact for details.