Yea, I saw that site, but it's pretty useless. It can't find anything.I see you have found what you have been looking for and good for you.(I am not being sarcastic) I also have a suggestion for you, that is to use this website for searching for parts, weapons, and ships off all classes and rating http://roguey.co.uk/elite-dangerous/.
Diaguandri has everything except the 7A powerplant AFAIK and everything is 15% off even to non-Yi Long Rui supporters
EDIT: Oops, it's not in Empire space.
LTT 1873 at Hadid City.