9" ford

I want to change my 7 1/4" rear, but all the 8 3/4' rears have appearantly been gold plated! Now I have a 9" ford in my back yard thats about 1 1/2" narrower than the 7 1/4. What kinda can-o-worms amI gonna open trying to adapt this? The bolt pattern is bigger. Change the axels? I guess i'll need to move spring mounts. what about adapting yoke to driveshaft? What am i not thinking of? Maybe someone could just direct me to a silver plated 8 3/4.