Hi drod,
Sorry it took so long to respond but we're still catching up on the forums from the holiday.
The Stage 1 does not replace the subs just the 4 sets of mid and tweeters. We are finallizing the development process so they should be out soon. From what I've seen and, more importantly, heard from the prototypes these speakers are an amazing improvement over the stock. The highs are much clearer and the mid frequencies are cleaner with a bit more kick.
If you're interested you should sign up on our waiting list and we'll let you know as soon as they are available. Here's a
link.