Okay I understand Ork Nobz can be upgraded into painboys. I assume these parts come in the box. But what about Wazdakka I cant find him on the GW site. Same thing with the storm boyz.

Meganobz are just regular Nobz right but with mega armor???
Same thing with the lootas and burna boyz the mek upgrade comes in the box???

I just can't find the answer on the site, or in the codex.

Finnally is there a site that tells the bitz that go with the box. Because that would answer all my questions xD.