The Stovebolt Site Forums The Shop Area Engine Shop Question about Motor Mount Position for my 1937 GMC T14A

My 37 GMC, someone in the past replaced the original motor with a 1946 chevy 216 motor. The motor mounts were homemade welded angle iron. The 46 motor mount position do not line up with the 37 GMC T14A frame mounts. The 46 chevy engine does not just drop in and bolt up? I cant find any info on either engine or frame rear motor mount location.