I modified a set of standard NSX seat runners from a trashed pair of seats and then made my own version of a seat slider switch as like everything NSX-R stuff is mortgage money!!
Because of the need to position the Pole Position as low as possible for headroom (the NSX-R seat shell if shaped differently by being flatter on the bottom) I had to position it further back on my home-made side brackets onto the original runners. This is why you can see the motor! I have yet (several years after doing this!!) to make up some covers......