Argentina has no suitable types to offer.
From Belgium, Renard offers the R.45.
It has capability to operate from grass fields but is not a specialist STOL type.
Crew: 3
Capacity: up to 48 passengers or cargo (has rear clamshell loading doors)
Wingspan: 35.05 m (115 ft 0 in)
Length: 24.99 m (82 ft 0 in)
Height: 5.74 m (18 ft 10 in)
Wing area: 111.48 m² (1,200 ft²)
Empty weight: 16,047 kg (35,377 lb)
Loaded weight: 23,814 kg (52,500 lb)
Powerplant: two 2,375hp Minerva Condor II 24-cylinder radials
Maximum speed: 502 km/h (312 mph)
Cruise speed: 418 km/h (260 mph)
Range: 885 km (550 miles)
From the Netherlands, Fokker could offer the F.123 amphibian flyingboat. A licence for licenced-production is not very likely however.
Crew: 3
Capacity: 18 or up to 2270 kg (5,000 lbs) cargo
Wingspan: 20.3 m (66 ft 7 in)
Length: 14.7 m (48 ft 3 in)
Height: 5.72 m (18 ft 9 in)
Empty weight: 4150 kg (9,150 lb)
Max take-off weight: 6500 kg (14,330 lb)
Powerplant: 2× 1,230hp Junkers Motorenbau Jumo 208C 12-cyl diesel engines
Maximum speed: 362 km/h (225 mph)
Cruising speed: 29 km/h (183 mph)
Service ceiling: 8685 m (28,500 ft)
Rate of climb: 6.9 m/s (1,350 ft/min)
Range: 2285 km (1,420 miles)
Australia could offer the DHA-3 Drover. They might be amenable to licence-production but de Havilland would insist on all engines being brought from the UK.
Crew: 1
Capacity: 8-9 passengers
Length: 37 ft 0 in (11.28 m)
Wingspan: 57 ft 0 in (17.39 m)
Height: 10 ft 9 in (3.28 m)
Wing area: 325 sq ft (30.23 m²)
Empty weight: 4,000 lb (1,815 kg)
Max. takeoff weight: 6,500 lb (2,950 kg)
Powerplant: 3 × de Havilland Gipsy Major Mk-10 4-cylinder inverted inline engine, 145 hp (108 kW) each
Maximum speed: 137 knots (157 mph, 253 km/h)
Cruise speed: 108 knots (125 mph, 201.4 km/h)
Range: 890 miles (780 nm, 1450 km)
Rate of climb: 800ft/min (4.06m/s)
Wing loading: 20 lb/ft² (97.59 kg/m²)
Power/mass: 0.067 hp/lb (109.83 W/kg)
From Britain
de Havilland could offer either the DH.104 Dove or DH.114 Heron. Licence-production would not be possible at this time, but as a large manufacturer I'm sure DH could accommodate any size of order.
DH.104
Crew: two
Capacity: 8 passengers
Length: 39 ft 3 in (11.96 m)
Wingspan: 57 ft 0 in (17.40 m)
Height: 13 ft 4 in (4.06 m)
Wing area: 335 sq ft[60] (31.1 m²)
Empty weight: 6,325 lb (2,869 kg)
Max. takeoff weight: 8,950 lb (4,060 kg)
Powerplant: 2 × de Havilland Gipsy Queen 70 Mk 3 6-cylinder in-line inverted air-cooled engine, 400 bhp (289 kW) each
Maximum speed: 230 mph (200 knots, 370 km/h)
Cruise speed: 187 mph (163 knots, 301 km/h) at 8,000 ft (2,440 m) (econ cruise)
Stall speed: 74 mph (64 knots, 119 km/h)
Range: 880 mi (765 nm, 1,415 km)
Service ceiling: 21,700 ft (6,610 m)
Rate of climb: 1,135 ft/min (5.8 m/s)
DH.114
Crew: two
Capacity: 14 passengers
Length: 48 ft 6 in (14.79 m)
Wingspan: 71 ft 6 in (21.80 m)
Height: 15 ft 7 in (4.75 m)
Wing area: 499 ft² (46.4 m²)
Empty weight: 8,150 lb (3,705 kg)
Max. takeoff weight: 13,500 lb (6,136 kg)
Powerplant: 4 × de Havilland Gipsy Queen 30 Mk.2 6-cylinder inverted inline air-cooled piston engine, 250 hp (186 kW) each
Cruise speed: 159 kn (183 mph, 295 km/h)
Range: 795 nmi (915 mi, 1,473 km)
Service ceiling: 18,500 ft (5,600 m)
Rate of climb: 1,140 ft/min (5.8 m/s)
Percival could offer the P.50 Prince.
Crew: two
Capacity: 8 passengers
Length: 46 ft (14.02 m)
Wingspan: 64 ft 6 in (19.66 m)
Height: 16 ft (4.9 m)
Empty weight: 9,961 lb (4,400 kg)
Max. takeoff weight: 13,489 lb (6,124 kg)
Powerplant: 2 × Alvis Leonides 3 9-cylinder supercharged radial piston engines, 540 hp (410 kw) each
Maximum speed: 186 mph (300 km/h)
Range: 1,012 nm (1,850 km)
Service ceiling: 7,680 m (22,000 ft)