Previously built a 9" with spidertrax 3.5" housing and used the sleeve method on the 05 super duty outers. Sold that rig, but it worked for me.
My 05 super duty is 3.75 OD, 3/8 wall. Not sure if the 10-lug stuff has thicker tubes.
I have looked at online builds where they grafted the two tubes together. Sometime using a slug for alignment and extra metal to weld to.