The 24 valve unfortuantly has just enough eletronics to goof up a perfect system. I owned 2 and got rid of them due to the 5th gear strippin goff the tranny from pulling heavy loads. 12 valve with a 6 speed stick... that would be awesome... More likely i will find a mechanical 7.3 extra cab or crew cab with a stick. with the upgraded clutch those are pretty sweet too. I think they are also easier to find that the Cummins 12 valve 4x4 trucks.