its be great make this cockip from Su27SM, to replace old one...but i know thats is impossible...
http://www.turbosquid.com/3d-models/cockpit-max/560986
u need plastic model of PAK FA in scale of 1/72 or 1/48.....i have one but i don't have much time to build that model to the end...from that model i can take measurements, and build in AUTO CAD 3d model in real scale...