It takes as long as it takes. Not everyone has the time or resources to throw at it.
Much better to do a good job, than throw it together. Besides, for some of us, the building is the best bit.
Cheers Jon and thanks as always Keith. I am going as fast as my wallet will allow me at the moment which isn't that fast. I bought a 1963 Ford Anglia over the summer and that restoration is coming towards a close now and has cost me a lot more than I was hoping so hopefully once that's done I can make some more postive progress on the GT40. I could rush ths job and just cover the pipes in the aluminum wrap I have and they would probably be fine but as I can't move onto the brakes etc just yet due to finances I might as well do the last few little jobs as well as I can.