as for the differences in GW29: the only things really changed would be the machinery, right? that suggests 2 equal funnels for the GW29, and of course smaller air intakes then what the gas turbines would use on the GW26.
is there any data for the speed at 80% and 100% power? trying to calculate the range this would result in
and I suppose GW26 and GW29 would both be build to cruiser standards?