Well … while I like the Macchi 205, I think the T-33 would be a better choice:
- it was the trainer version of the USAAF’s first jet fighter and thus dates back to 1944 and is almost as old as the Macchi.
- it was the first jet fighter to use an internal engine instead of wing nacelles
- while we already have a multitude of WW2 warbirds for MSFS, there still is no 1st generation jet fighter (Me 262, Gloster Meteor, Volksjäger, P-80 Shooting Star) available, save some freeware conversions