regarding the land cruiser wheels: fj60 and fj62 (1990 was the last year for the 62) have the correct backspacing and the rim is 6" wide. i'm pretty sure the fj40 has the same stock width and backspace too but i don't have one of those

. after the fj62, the backspacing changed (will require spacers) and they went to an aluminum wheel. it's a very obvious toyota wheel too, i think it would look funny on a chevy. the 60 and 62 wheels are chrome plated steel.
iirc summit just has the generic wagon wheels in black, white or chrome.