Help Wanted: Looking for ideas for a Titan-oriented narrative campaign :)

[GR00V3R]

I'm trying to draw my local gaming group back into the Epic fold, and it seems a great way to achieve that would be via a narrative campaign.

I'm thinking a great little campaign around Legio Victorum taking on Legio Excruciatus would be awesome, so now I'm "ideas hunting".

Are there any good clashes between Victorum and Excruciatus in the 40K lore that I could pilfer from? Any decent scale Chaos intrusions/invasions that might see these two groups of war-gods going head-to-head?

[Katharon]

Why not just take a [url=http://wh40k.lexicanum.com/wiki/Titanicus_%28Novel%29]story of an epic confrontation[/url] and use it as a template?