I seem to recall seeing some 1-1/8" quill stems out there. You might have to do some searching and your choices might be limited. However, you have another option. There does exist a 1-1/8" quill to 1-1/8" threadless adapter which allows you to fit any 1-1/8" stem.
http://www.lickbike.com/productpage.asp?PART_NUM_SUB='1089-01'