from the youtube reviews the main differences are,

Chest,
Crotch n butt and some tabs on the arms(which are modified so the jet pack and accessories can attach to it). But does this hinder Jetfire power up?


http://www.youtube.com/watch?v=LyrdY...feature=relmfu
(I think this guy reviews whilst he's drunk)

http://www.youtube.com/watch?v=vs9iImDTNKo