The Energon Pub

[mixmasterblaster]

Help!

So I just got a complete G1 Predaking off eBay. It was listed as 3/5 Predacons with (die cast) metal variants. I'm confused, though, because all 5 of them have die cast metal parts.
Headstrong has a die cast metal back.
Tantrum has die cast metal sides of his chest and hips.
Razorclaw has only a die cast metal waist.
Divebomb has only a die cast metal waist.
and Rampage has only a die cast metal waist.

Sooooo are they all the die cast metal variants or do the true metal variants have full metal chests (Razorclaw, Divebomb, Rampage)? Am I wrong in assuming that if they have any die cast metal parts, then they are the metal variants? Can anyone please help with this question! I've checked my usual TF sites (transformers.wikia.com, http://www.tfu.info, http://www.unicron.us, http://www.tfw2005.com) but can't find an exact answer. Thanks!