There are several online resources for 5 X 112 to 5 X 120 wheel adapters, but be warned that most are 1.25" thick ( 31.75 MM ). I did see one listing at 15 MM, but that is probably pretty near the limit on strength.
At any rate, you will be looking at additional wheel offset, so make sure what you intend to install will fit.

NOTE: This is for information purposes only, IMHO this is NOT a good idea.