Help rear Drive Shaft got me down
 

Ok lifted truck 3 front 4 rear I pull my dump trailer (some) times 30 - 32000 truck trailer load . after lift carrier bearing came apart replaced it, that one too came apart now, re placed it worked good but drive shaft seems short today with out trailer rear shaft slid out from from front 1/2 of drive shaft should I go with a one piece or have rear shaft made longer this is a hauler not a drag truck pull dump,horse,and tractor by the way 5.9 only mod larger injectors western Hauler bed 6 speed crew cab long bed any and all help I thank you for.