Richie, I'm going to make my pitch one more time. There is no doubt a Wye can be configured to fit the space between the doorway on the left and the existing O36 switch on the right. However, everyone seems to be missing the fact that the existing purple southbound track is fixed at 1" from the left edge of the layout (13.5: from doorway) and I'm not sure how far down you're willing to tear up. Also, the blue O36 switch on the right is fixed at 33" from the doorway and the clear O31 switch on the left is semi-fixed at the doorway. In fact, if there is going to be a lift out/up bridge, I submit that the switch actually needs to be at least an inch in from the doorway, if not more.
Anyway, O31 is the smallest FasTrack switch and O31 is the tightest FasTrack curve. One way I see to get a switch/curve combo to mate with the existing southbound track is by adding 2 short O31s going in opposite directions and I have no idea how many problems that might create. FasTrack doesn't have a flex track, but even if it did, adding one would simply result in a curve tighter than O31 and that would probably create it's own set of problems.
I did like Jan's idea of playing off the existing O36 switch, so I tried several iterations and settled on this one. The cut 30" track is just under 9", so I believe 2 pieces of 4.5" track would fit even though they won't connect in SCARM.
Now, if you're willing and able to tear up more southbound track, here's the way I'd probably do things. It doesn't require any cutting, but does connect further down on the existing southbound track. There is a small "S" curve where the 1 3/8" and 1 3/4" pieces are between the half O36 curves, but this will be a relatively slow speed section, so I don't know how many problems that will create.
