Hmmm..since I am not a programmer I don't know just how much info you need to model a plane correctly, but isn t this stuff enough?
Span: 10.58 m
Length: 8.85 m
Height: 3.48 m
Absolute maximum speed: 642 km/h at an altitude of 7,200 m; safety speed 158 km/h
Absolute ceiling: 11,200 m; service ceiling: 11,000 m.
Cruising speed: 580 km/h
Maximum range: 985 km
Weight empty: 3,408 kg
Total weight: 7581 kg
The useful load consists of:
two 12.7-bore weapons: 60 kg; two 20-bore weapons: 84 kg; 740 12.7-bore cartridges: 76 kg; 250 20-bore cartridges: 100 kg; radio transmitter and receiver, and
radiocompass: 51 kg; pilot wearing a harness with a parachute attached: 85 kg; collimating sight, oxygen set, first aid kit, pneumatic dinghy, and pyrotechnic pistol: 31 kg;
gasoline: 307 kg; oil: 33 kg
Wing loading: 202.8 kg/m2; weight per horse-power: 2.73 kg/hp; surface power: 74.40 hp/m2
Even if that's not enough, you should be able to get more details since (as mentioned on this page) they restored the MC 205 to flying condition. So there's gotta be someone out there who flew this bird not too long ago. Maybe you Italian guys can get in contact with the museum?
Tschüß
Sascha JG 77 "Herz As!"