Just FYI, 1155 and 1156 are not compatible in any way. In fact they are really a full generation apart. 1156 was mainly known for Lynnfield chips while 1366 had the big boy i7 chips like Bloomfield and Gulftown. 1155 was the socket which supported Sandy Bridge.
This is obvious for me
I'm just trying to sell two mobos and two cpus with socket 1155 and a cpu socket 1156.