After letting it warm up slowly at idle & most of the oil had burned off, I raised it to ~2KRPM for a few minutes, which got the manifolds glowing a dull red, baking the grease around the ports into varnish seals.
I did this before reinstalling the wheelwell so I could watch for fire or leaks. It's fixed, but too dark & cold to finish installing the wheelwell tonight. The spark plug wire heat shield (F2UZ12A406A/F4TZ12A406BA) is missing.
Before ripping out any emissions systems, read
this article.
I didn't fix it on this truck, but the evaporator insulation hanging down in this pic can be replaced with a more-robust modern material, like this:
