“It would not have all the modern gizmos.”
The electronic gizmos are getting cheap — cameras, transmission methods, processors, actuators, throw in software. Are we humans becoming obsolete?
**nothing** authorized to be in the commercial cockpit is cheap. Also the older aircraft cant fit or power or integrate new ‘stuff’ easily. And the FAA hasnt certified, because no one has asked the to, or spent the money for testing, etc etc
Like trying to upgrade the cockpit of an F-14 (think TopGun Maverick) to the glass cockpit and gizmos of an F-35B — aint going to happen, aint gonna work anyways.
As a private pilot/ general aviation you have more leeway in using a handheld Garmin or even your smartphone for VFR navigation, but it’s not going to integrate into your 16 year old Cessna 182.