Upgraded my player series strat to vintage style tuners. I hated the modern ones (on the right) that came with it, these look much better and are way easier to restring. :
Genuine Fender 6-in-Line Vintage 70 s Tuners for Strat/Tele
Updated* How to String a Guitar with Vintage Style Tuners - YouTube
Wilkinson Deluxe Tuners/Machine Heads Chrome Right Handed WJ55 Split Post Vintage 'Kluson Style' 6 in-line for Fender Stratocaster, Telecaster etc. (Right Handed, Chrome) : Amazon.co.uk: Musical Instruments & DJ
Fender Tuning Machines | Vintage Buttons - Mann's Music