Delta acquired Western Airlines and the 737-247; I would be very surprised if these did not have the SP-77 installed. Did DL convert these aircraft to -177 AFCS? I can’t say for sure.

How accurate do you want?

For CS to change their model to the DL standard, more is involved:

     In addition to the SP-177, autothrottles should be installed;
     Strobe and/or Logo light added;
     VLF/Omega added;
     PDCS control head relocated to upper left side of throttle quadrant;
     Current ALT alerter removed –in MCP of 177;
     Change RMI heads;
     Update fire warning panel;
     Fuel totalizer removed;
     Nav/Com and radio selectors would need to be changed;
     Transponder head relocated;
     Different WX radar;
     Engine performance would have to replicate the -15, or -17.

Once cabin view is available, which galley and seat layout is desired?

And this is just the surface stuff of which I am aware.

Can you imagine the complexity in trying to model every variation and at a price point not bringing (more) negative comment? Does the competition offer a better overall model, at a lower cost?

Sean