I have a 240sx with a RB25det. The 4th gear synchronizer is gone. Anybody know where I can find parts to rebuild this? Or anybody around PA or MD willing to rebuild and install? Or does anyone have one they are willing to sell? Or does anybody know if I can use parts from a different vehicle for this transmission? Any and all help would be appreciated. Just got this car and I am at a loss as to how to get it fixed.