You should be able to regear your Ram for $1000 or so. That is what I paid Gearman to do mine. Also, friend so fmine had 4.56s also for that price (or near it) at Rear End Specialists.
Yeah, but Mike ladd was gonna give me a 4.10 geared dana 60 for $800, and then i was going to put in a 14 bolt from pick and pull for $125.
Actually, if i do end up re-gearing, i would probabally go down to right gear and axle in salinas. Real good guys in there. And they built, and installed a 10.5" 14 bolt, converted to semi-floating, with 4.10 gears a detroit locker for $2300... Not a bad deal IMHO...
But we will see.. once i get a trailer, and start towing around my 4 runner, ia m sure the 4.56 gears will ge comming in quick.