Hi all. My 5 ton A2 was USAF, had 2 cowl solar panels- about 5 1/2" X 4 1/2"each . Would like to change them- low volt output now. Were they a local- base thing, or a regular part that may be available surplus? Bought truck at local auction, so no history. I bought aftermarket "inverter" to charge bats, need input now. Any part source or input would be appreciated. Do not want to cut up cowl metal more.