UPDATE: Motor swap complete!!
New motor started immediately and ran without issue today. I could only take it around the block a few times because it's completely illegal... See vid here
https://sendvid.com/p47lvb7u In the vid the phone's microphone recorded the motor sound like it's a small block Chevy engine, but in fact it runs as quiet and smooth as a new hundy.
I found the motor locally in the week following purchase of the truck. It's out of a 2003 4Runner SR5 with 79,000 miles, documented by carfax and good service history from Toyota Owners site. Paid $1000 even, so real pleased. Probably put another grand into it with a reman OEM steering rack plus polyurethane bushings, new Denso A/C compressor, and various other OEM parts - idler and tensioner pulley's, serp belt, rad hoses, plugs, fuel/oil filters, O2 sensors, Toyota fluids, etc. No TB replacement, the timing belt had been done just before the 4R wrecked - still soft as new. I didn't de-tension to check the WP and TB idler bearings. No signs of water leakage from pump previously. Some perfectly clear, pink SLL coolant was still in the system, so that was encouraging. No sludge or negative findings during the bottom-end visual when the oil pan was removed/swapped. The Toyota FIPG seal worked great putting it all back together.
Transmission seems fine. During the drain before motor pull the fluid was as clear as light red wine; no smell. Absolutely no issues driving the few miles today, but obviously I need to get ready for inspection and take it down the road some more before final conclusions are made. At just under $4000 into this rig now I'm feeling pretty good. And the wrenching was pretty good too!
