Cold air intake for 4BB TBI
Don't know exactly what was available in Argentina, but around here any of the Magnum engines (3.9, 5.2, 5.9) would have had cold air intakes that will bolt on to any 4 bbl.
Either the one above that TT5.9mag showed, or the more traditional housing here:
Around here they came on pickups, Dakotas, and vans.