You have a few options, get the adapter and run duels with stock gears, or if you will get some more $ not far down the road, get the 4.7 now. Gear the extra case and swap it with the 1 in your truck to reduce down time of the truck. Then when you have the extra $ get the adapter, cross member, and do the drive shaft work to go duels.
Thats kinda what I was thinking... Or since I already have the other case... I don't know...
if you have the 4.7 and get in mud you'll find yourself in 3rd or 4th gear, not a bad thing i guess, but i love my dual cases
That is a good point too. We seem to have more mud than rocks around here... But I could always use 4 hi for mud wheelin... hmm...