I don't think it's possible, as the engines/propellers/refueling pods/extra fuel tanks are all part of the exterrnal model, and the C-130J doesn't have the refueling pods. Also, looking in the Prepar3D v4\SimObjects\Airplanes\KC-130\model.KC-130H folder, there is a single KC-130.mdl, and this does not have the extra fuel tanks.


Even if you have copied the CS C-130 X-perience over to P3Dv4, the ACE  doesn't work, so that's no help either.