tank yes and in a weapons i belive try gunnys pack!
gun pod never saw it on a F-104 but a simple ini edit!
and no to both check datas from 104 in NF5 install
[CenterlineStation]
SystemType=WEAPON_STATION
StationID=5
StationGroupID=3
StationType=EXTERNAL
AttachmentPosition=0.0,2.73,-0.954
AttachmentAngles=0.0,2.0,0.0
EjectVelocity=0.0,0.0,-2.0
LoadLimit=1000
AllowedWeaponClass=BOMB,NUC,RCN<<<<----no gun or tank entry!
AttachmentType=NATO
ModelNodeName=Centre_pylon
PylonMass=57.61
PylondragArea=0.005
but put it like this
AllowedWeaponClass=BOMB,NUC,RCN,FT,GP
now you have both!
also put this at the bottom off central entrys
FuelTankName=Tank195_F104
hope to help