Probably. I'm assuming that the truck is lifted at least 3 inches.

The spring mounts may be different, but the driveline should bolt right up.

Use the original driveline on the new axle and there shouldn't be any problems with t-case fitment.

Also, there exists a wealth of driveline variations available for you as the need arises. You can retain the original slip yoke and change drivelines by purchasing the appropriate U-joints for the new combination.

Axles are generally very easy to replace, so I wouldn't be afraid to go ahead and give it a shot. Shouldn't take more than a couple hours to know whether or not it'll be a direct fit and figure out what, if any, mods will be required.

One thing to keep in mind, the rear brakes for a full floater axle are different than those on a semi floater. You may need to replace your master cylinder in order to restore proper braking.

Clay