Hi Alan,
in the KC-130 manual it says:
The ‘KC-130 Model’ expansion package does not require any C-130 base package and can be installed to default installation of the MS FS2004.
In this case user will get the following KC-130 setup:
- Original Captain Sim C-130 Flight Model (aircraft.cfg and .air files)
- Original Captain Sim set of KC-130 Models
- Sound - Alias to default Beech King sound
- Panel - Alias to default B747 panel
- No textures in VC
- No gauges in VC

Well, I thought that's enough for me, as long as the inflight refueling works. In the add, there is a nice picture of the pods, which encouraged me to buy the expansion model only. I would be rather dissapointed if I'd to post-install the base pack.
Glocke