Look similar to the ones on this one. http://www.ebay.com/itm/1986-Fender...n-/271279989848?pt=Guitar&hash=item3f298c2458
good catch... i got a pristine one because it had a badly cut nut and the g string kept flopping around.... plays like a dream now...
I've had 3 Performers, those are the correct tuners. And yes, the G tuner can extend past the headstock.
love the Performer so much - I made my own http://www.talkbass.com/forum/f57/custom-performer-supersonic-bass-904968/