Snap-on SRD35 torque adapter
 

This is the torque adapter you need if you are going to try to torque down head studs on a powerstroke without having to remove the cab. Makes life much easier to be able to do this without removing the HVAC box or bashing in the firewall.

Snap-on wants $58 + shipping for the part. I'll do $50 shipped for a like new item.

Did it actually work for you or help in the way Snap On says it should?
Do you still have it?