[rdouglass]

Yeah, in terms of speed (not necessarily resources), retrofitting with a few repair bays in the same sector is faster, especially with DN's or other large ships, than building from scratch. Smaller ships can many times be built from scratch faster if you have no repair bays handy and you're replacing / upgrading lots of components. It's purely a function of the build / repair model: build time(s) is based on required resources and SY output and repair is based on numbers of components (disreguards resource amounts).