Bummer as that is a hell of a deal. I just spent a lot of time assembling this setup here in Utah. I only short 1 tire still... Do you have any photos of them on a truck or any other photos I could talk you into posting or emailing me direct? Thank you!
Backspacing is 4.5" and the wheels are 7.5" wide. 6 x 5.5 mounting pattern, as mentioned, Tacoma/FJ Cruiser/early Sequoia/Tundra and land cruiser of course though they will narrow your overall stance...