I just got my first MR-02 yesterday:
I love the Enzo body but i'll be transplanting the mirrors from my Firelap Enzo body to the mini-z's - The mirrors on the Firelap's are rubber so it will be able to withstand impact without breaking out of the Mini-z shell. I'll post a pic when i'm done with that little modification.
Here's the upgrades that i'll adding for now:
1* alu Knuckles
Metal lug nuts (blue)
Kyosho Diff.
Yellow front suspension Springs w/ 4* limitors
Shape-memory antenna
Metal ball bearings
Atomic motor cooling fan system
Mini-Z X-speed V motor
Kyosho Oil rear shock
That's all for now but hopefully i'll add some more stuff later.