Outer Limits 4x4 Board

ok guys , i've got a N F v6 auto with 4:625 diffs, i have just looked at the database and from what i read i can put 4:875 diffs in it.
if this is correct what model padj has these diffs and is it a straight swap and for that matter is it worth the stuffing around.
the idea is to lower the gearing to make up for putting 33s on or can i do something to the transfer case to lower the low range gearing??
any ideas

Have a look in Frank and Scott's bible - you'll find all you need (and more)

http://www.outerlimits4x4.com/viewtopic.php?t=34204

Thanks for that, had looked in there before but missed the info
didn't have my glasses on!