Try and define what you want to concentrate on this neo.. is it speed/power? ,handling? ,responsiveness? ,looks?
Honestly for me the fun with neo lies in its zappy handling
Power
. 4-2-1 extractor n suitable matching exhaust parts
. better flow drop in air filter. forget open pod.
. r3/pro rallye spark cables. if spark plugs.OEM pun okey.
Handling
. Set of lowering sport springs. RACE & r3 are among the many good and affordable ones.
. Wider patch of tires, naturally.
. Proper allignment and chamber setting. Dont underestimate!
. A pair of affordable bucket seats
. Strut bars
Responsiveness
. Voltage stabilizer, since campro uses the fly-by-wire technology.
. Lightened flywheel
. Lightened crankpulley
. Adjustable cam pulley
. Adjusting throttle responsiveness
Looks
. Up to you imagination, bt the stock neo is already pretty and cute!
Just my 2 cents though. Different people will have different preference in modding. Join satrianeoclub dude. Lots of info and friendly members there too. (=