What they said, basically looks like the rubber insulators that were on my 99's factory exhaust. On what they did for me they weelded a new mount to the crossmember at the front of the tank. Not what I wanted, didn't want any thing welded to the frame, but forgot to mention that when dropped it off. Still rubber insulated and should be easy enough to remove with the next round.
Today I basically wasted a day. Determined last night that my AC clutch wouldn't kick on due to the low pressure switch, it worked when switch bypassed. Narrowed it down to either a bad switch or no pressure in the system. Swapped the low pressure switch for the one on the old 4.0L AC system, still didn't work. Last night on the way home I rented an AC vacuum pump. Also decided that it it was that low on refridgerent then I would do things semi properly, so went ahead and picked up new receiver dryer, o-ring kit, and oriface tube.
This morning we confirmed no pressure in system to close the low pressure switch. Replaced the components I bought last night. Orifice tube was a bit concerning, but PAG oil drained out of the receiver was clean. Proceeded to vacuum down the sytem and discovered that the rented pump would only get it down to 16 in/hg and the system wouldn't retain vacuum. Started hunting the issues, eventually figured out a way to pressurize the system, and found that one of the high pressure manifold hoses was leaking. With that side disconnected and closeed it shot right back down to 14 in/hg and we've left it there for the night. If it holds we'll try again with the rented pump in the morning, and I'll buy a stronger pump from HF tomorrow if necessary.