BME (Bud Moore Eng) used an in pan dry sump pump that was driven by a single row roller chain sandwiched between original timing chain & front main, any of the current single stage pumps from Peterson etc could be mounted in similar fashion with a bit of work for a tidy 'stock appearance'.
By the same reasoning you could make a nice billet mount to attach the single stage belt drive pump directly to the
oil filter boss of an FE with integral filter &
oil cooler attachment points - belt would fit behind damper & you require an electric fuel pump.
Jac Mac