@kiyul4130 Pardon looks like I missed a response...
To your questions:
1) Circ clips are the blind install spring clips, not the full up have c-clips some axles use. The live on the tip of the stub axles inside the spider gears.
2) Ratios, looks like you might be right. Summit carries 10 options in 3.08 gears but if you find taller it may be an unsual application.
3) 06-07 is fine. Only thing to watch for is that 06 is a transition year and some used the 02-05 style diffs with the single front mount. For your application I'd recommend the double mount. I also assume your ARB will be fine in any year 06-10.
4) I did finally track down the correct seal to let you use
cobra style input shafts in an explorer housing. Woot! Customer came through for us... Napa p/n 16406

5) You lost me on which direction you have and need and I'm not sure if driver or passenger drop transfer cases make a difference. That said, I agree portals typically reverse normal operation and dramatically reduce halfshaft loads, so clearly you're thinking about this and will get it nailed.
@tak209No deals running at present. To be honest we rarely offer deals since they're a bit of a pain to operate and enforce. The basic Ronin business model is to offer the best possible goods at fair prices and call it a day. Hopefully the added $65 shipping the holiday sale might have saved you isn't a deal breaker. Last year's holiday free shipping was the first time we've ever done something site wide.