Who has put a B-body 8.75 under their 70 dart?

Been looking into rear end options for my 70 dart and was wondering if anyone is running a B-body 8.75 under their 70 dart. I know that the spring perches need to be moved in a half in on either side, that is not a problem. I was wondering about what kind of wheels to run to make them fit in the smaller dart wheel wells. I am only looking to run stock steel or police style rims. I realize that I can order new wheel with the correct back spacing if I need to. Has anyone gotten any factory steel wheels to work with this setup. Who can you order custom steel wheels from if I have to. The reason I am looking at doing this type of conversion is because I have a B-body 8.75 that has less than 20000 miles on it with a sure grip and 3.23 gears. Thanks in advance for any knowledge sent my way.