will a stock wheel taken from a '91 560 sel fit into a '86 300E?

I'm sure it will physically bolt up, but it might not look so great. The wheel from the W126 will be offset to the outside of the vehicle by at least 1/2 inch.

I'm not sure if the W124 had an offset of 37 or 49 in that year. If it's 49, the W-126 wheel will be out about 1 inch from normal.......it'll look ridiculous.