So finally jumped on a 650b and retired my stumpjumper which my mate promptly took off my hands. Its a work in progress but heres my GT sensor elite 2015 S frame.
Mods so far.
Anodized blue 180mm rotors
Andodized blue seat clamp
Centrelock to 6 bolt adapter
110mm DNM dropper
T.H.E thin line grips.
Crank brothers candy
Jetblack Blue pedals ( spare )
1x10 single front chain ring ( not yet installed )
Mods to Come.
Stem
Tubeless
Front forks possibly a 34 Kashima or a Marzocchi 350
So far the bike has been great and loving the performance, its not as light as my 2014 stumpjumper evo (12,2kgs) but meh its more than what my skills can handle anyway. GT @ 13.4kgs
Cheers