My plan:
Take plexiglas (which i have some) and cut it the shape to fit behind reflector part
Measure and drill holes for wires in a pattern (nothing special, just evenly spaced)
Mark where those holes would be on back of housing
Drill small holes to mark them, drill bigger holes the size of LEDs
Glue (silicone) the LEDs to the plexi and insert lights and plexi into holes in housing
Resistor and wire them to running lights. since LEDs use way less power they will be brighter with the right resistor
i also have these lights. the lenses are damaged so i was thinking bout doing LED tails for these (i have a CRAP load of 1/4 inch red LEDs)

what do you think? do you have any other ideas?