Its pretty easy to do it yourself to be honest,
All you really need is 4 x e39 520 (others are useable, juts get the right bremi number) coil packs, 3mm alu plate, thread tap, some bolts etc.
The coil cables that go in to the solid coil block on the e30/36 are the same connector as all the other bremi coils,so when you pullback the insulation you can separate the wires, re-insulate them separately, and re-route/run them over the rocker cover.
Here are the pictures of mine, Rich (I'm not sure if he on here - vision racing developments) gave me a kit back in 2010, but very easy to do yourself if you can do simple metal work.
Untitled by
clarkyboySE, on Flickr
Picture should make sense, but PM me if you want me to take some detailed pics for you.
alternatively - ill make you up a kit for a reasonable price !