I believe by ordering the most powerful engine variant of the 738 in-game, this is, in effect, ordering the SFP model.
I'm not sure if that's right or not, my understanding of it is that it is modifications to wings, flaps, tail skid etc that increase the performance.
I can't find any solid figures though so I'm not much use. I just have a vested interest in seeing this added
Only stuff I can find is third party (all the Boeing links appear to be dead).
"It allows a 737-800 to achieve about the landing performance of a 737-700."
http://www.airliners...ic.php?t=759289
If the longest take-off distance for a 737-700 of 4,675ft was used that would be useful?
Due to AE's use of the distance at MTOW it restricts aircraft operations that happen in real life. E.G. Emirates operating a 773ER into GLA happens twice a day but is impossible in AE
Creating an SFP model would help counter this for the 738 as I feel that it is rather restricted in AE compared to the A320.