http://www.waytekwire.com/
what your looking for is Delphi connectors http://www.waytekwire.com/delphi-connector.htm they are very nice, but pricey. not that thats a really big deal considering you dont really need that many.
as far as grounds go, your going to have to add grounds to a few of the components such as the fuel pump, electric fan, stereo ETC. I personally don't find that to be a big deal, but some people might.
Joel, that kit looks really nice, I do like the fact that each circuit is separate and that you can disconnect them at will...that really is a nice feature. IMHO though, and for my personal projects, I would save that little extra cash and still chose the EX wiring kit. its so simple its almost painful, and diagnosing any problems would be a piece of pie. another thing I just thought of is where do you mount the bulky connector? its nice to have straight wire just in case you want to route your harness somewhere that might have some kind of interference or aesthetic complications.
just a thought