As Idrees has just said its alot of money to invest in moulds etc for only a few sales I am in the long run going to be building my own carbon/ carbon kevlar doors but it wouldn't be in your timescale I'm talking sometime next year really these could be made with no real inner skin so would be extremely light weight! 1 thing though I have considered making a carbon Fibre door pannel so it don't have the window frame that will basically allow you to cut and leave around 1.5" around the origonal door and bond this Light weight carbon panel on obviously then you could take as much weight as possible out of the origonal door so it would still be extremely Light strong and be cost effective