Need some help with Star Wars Flight Sim Games

Hello i am new to this forum... i was wondering if anyone could help me with some ideas... first off i am going to build a sit in cockpit star wars flight sim. for my nephew for christmas. i am not sure what star wars flight sim is best. i want it to be as real as possiable.. i have basic design of cockpit with gages radar lock on target. almost all flight nav. and other cool stuff. computer is just a quad core, 32 inch flat screen, any other ideas would be drawings. i am planing to use pvc frame covered with cardboard then soke with fiberglass resign so it hard shell then detail paint wet sand and buff..i am just not sure on what sim program to get. and any other help would be awesome... thanks... i want to make it a christmas he will never forget..Laughing