I've been lurking around here for a while, that truck does look familiar. I've driven a couple SC'd Tundras over the years and they are pretty fun. The only thing I don't like is how intrusive the traction control is with the SC. It's tempting to do to my new tundra.
Who used to own this? Anyone we know?
If you could actually get it for cheap, you could really make some money on it. If it was closer, I'd throw a bid in. Someday I'd love to swap in a 5.7 (especially a SC'd 5.7) in my 2014 4runner.Do it. Part it out. Or keep the parts for spares.
The Supercharger is 10x that price.
Use the motor for another project or sell it. If you have the space to store it for a while and disassemble it, it would be worth it in the long run.