Did it last night after a glass of bourbon (Maker's). Felt the intake before I did it. It had been resting for at least 2 hours and the intake manifold was still scorching. I took it out carefully, retaining the fasteners, just in case I had regrets in the morning (seeing as I was under the influence, and all.)
Haven't had a chance to drive it, yet.
It seems all previous discussions of this topic have centered around noise, or speculation about the liner's purpose. This is the first time I've seen anybody really address the engine bay temperature issue, and back it up with both subjective and instrumented measurements.
Just another reason to love this forum and all you other members who make it great. (Wish to hell I knew more so I could be more helpful.)
Cheers!