Ahh:

Those sound reasonable, but I would call them making it more similar to the CAL 757-200s, not the 767-400. The 757-200Cs have all the bells and whistles (CPDLC, ADS-B, ETOPS, vertical tape), but still have round-dial steam gauge airspeed indicators (plus the vertical tape), and altimeters.

What I was referring to was a complete redo of the 767-300s to have the 767-400 and 777-style EICAS glass. That would be sweet, but would require a complete gutting of the cockpit...er, "flight deck."

Yours sound far more plausible, and affordable. However, the IAH CP said they are considering the total-glass conversion.

Question: is the thrust upgrade a flip of a switch, as it is on the A-320 and A-319? (same engine; thrust rating depends on which type it is hung on....switch change on the fuel control unit).

You weren't suggesting changing engine types, were you? I would think that would be economically impractical.