You can use the CFS3 Aircraft with a PylonType="pylon_null" in the XDP file
so it looks like,

           <Loadout Name="(1)6000lb Upkeep Bomb" MissionType="Strike">
                 <Hardpoint ID="7" PylonType="pylon_upkeep_bomb" PayloadType="upkeep_bomb" Quantity="1"/>
           </Loadout>
           <Loadout MissionType="Strike" Name="(6)500lbs + (1)8000lbs Bombs">
                 <Hardpoint ID="0" PylonType="pylon_null" Quantity="1" PayloadType="b_500lb"/>
                 <Hardpoint ID="1" PylonType="pylon_null" Quantity="1" PayloadType="b_500lb"/>
                 <Hardpoint ID="2" PylonType="pylon_null" Quantity="1" PayloadType="b_500lb"/>
                 <Hardpoint ID="7" PylonType="pylon_null" Quantity="1" PayloadType="b_8000_hc"/>
                 <Hardpoint ID="12" PylonType="pylon_null" Quantity="1" PayloadType="b_500lb"/>
                 <Hardpoint ID="13" PylonType="pylon_null" Quantity="1" PayloadType="b_500lb"/>
                 <Hardpoint ID="14" PylonType="pylon_null" Quantity="1" PayloadType="b_500lb"/>
           </Loadout>
                                              //--THIS BIT HERE---\\

I'm you'll see any Bombs in the as they fall, but not where they are attached in bomb_bay/wing

i've no idea about wingtanks ?

nrev