you will be in about $3000 for both axles but you can probably sell your old ones and make up some of that cost.
you could run with the 4.10's for a while all though you would be under powered you can get by just don't expect to ever use 6th.!!
What do you think I could get for the stock axles?...$5-600?...
What would be more bang for my buck...
#1 Run the stock D30 and regear with 5.13's F&R ($1300 installed), new Soft 8's ($400), Treadwright 37's ($700), Rough Country 4" ($575)...Total $3K...When it breaks up-grade to the Rubi Front w/5.13's...
#2 Swap out stock both axles with Rubi axles ($3k), run 4.10's, 2.5" BB lift ($400), Soft 8's ($400), find a used set of 35's ($4-500)...Re-gear down the road and up-grade to 37's...
Just a thought...