You could space the bell housing but then you would have to space the flexplate.. On a Y block we make an aluminum bushing to go in the pilot bearing hole and accept the converter . Then for a Y block we make a 4 steel spacers that bolts between the flex plate and the converter. It seems a little sketchy but mine has held up to 500 hp on my drag car One guy accomplished the same thing with an aluminum ring between the flex plate and converter. When you compare bell housing depths it will guide you on what you need.