Interior lights I went with Putco. I probably paid a little too much vs. the LED's you can get off of ebay but it was plug and play and was worry free. HID's is a long drawn out story. The short version is DDM Tuning kit with their error eliminators. For the most part was plug and play with some modifications needed to the housing covers.
Here is my install thread and follow up with the long version of my HID Story. http://www.ramforumz.com/showthread.php?t=90777