Short version: Besides the 5 mechadendrites in the core book "Dark Heresy", where can I find additional mechadendrites? Does it exists any guidelines for house-ruling additional mechadendrites into game?
Long version: In a on-going (first edition) Dark Heresy campaign I'm playing a tech-priest who, as most tech-priest do, want to mechanise themselves. My character happen to have a thing for mechadendrites, so I am planning ahead for the eventuality that the character lives to see the day all 5 mechadendrites in the sourcebook is attached and functional. Is there any rules for additional mechadendrites? Specific rules or guidelines and where I can find them is appreciated.
Our groups standing social rule is that we use official material first but house-rule things into existence if a suitable item does not exists (and the item fit the setting enough), so experiences with house-ruling mechadendrites is also welcome.