Hard to find these days, they don't make them anymore and you will only get them second hand. Maybe check sites like http://nissansilvia.com/, or http://www.gumtree.com.au even Ebay. I have seen them come up occasionally..
sorry, ive a c'shifter which came in my car from japan. removed it as to see what the srd shifter was like. it was smoother (prob as the c`s wasnt greased up) . if it was worth a few bob i might be temped to sell to fund other parts for the car .