Very loosely based on the instruction for the still unreleased Blitzwing set with tons and tons of modifications. Using just Kre-O parts, it was quite a challenge at that size, especially since I was missing a few key parts that seemed exclusive to the Drift set (not parts I had anyway). No partsforming other than the nullrays having to be detached from the turret for robot mode. I'm especially proud of the the attachment systems for jet and tank mode and how the feet swing around for robot mode, even allowing ankle tilt.
I don't know why I wrote Drift in my first post, I really used the instructions for Blitzwing! You'd need tan and purple bricks to do a Blitzwing, not too many Kre-O sets have them unfortunately!