Can be done for sure you would need rails, track, cut tunnel, and just a couple small rear suspension parts from polaris. The factory 174 skid is not the same as the 163 so a simple rail change will not work you will need a couple rear arm parts.
It will be costly and might be just as easy to sell the sled. Depending on what track you might also need drivers and a anti stab. Also the deciding factor is the suspension mount hole center to center is also different so you would be relocating the rear mount and that is a gay job for sure.