Ford spring perch width was standard from the nid fifties until they went coils on everything. You probably have a intregal carrier if it was a six (has 4 bolts on the wheel). An 8" while not as strong as a 9" will give you more than you have but not quite enough for a stout big-block. Any early Fairlane ('64-70), '67-70 'stang/Cougar will fit as will the 8" from an MII, Granada/Monarchs(and the disc braked Versailles. All those should get you tires that stay under the fenders, late '50's early '60's big Ford rears will bolt in also if there is a source in your area.
[ April 16, 2003: Message edited by: woodz428 ]</p>