Anyone know these hickey saddle tanks?

[mrtoni]

These were def sold by hickey as there’s an old receipt but never seen this style. They’re nos and have the fuel line, long mounting bolts and hickey pacemaker transfer switch. Is this the type that went under the bed and required cutting torsion/torque boxes? Did they fuel from in wheelwell? I don’t have a k5 anymore but all parts were 69-72 and nos.