A-body 8 1/4 $200 7 1/4 $100 In London ky

Spring perch measurements please, center leaf spring hole to other spring hole
memike has a 66 Valiant with a 7 1/4 and would be happy with a 8 1/4 for my /6 sedan.
I bet I can find some drums, is this a 5 on 4'' or a 5 on 4 1/2'' pattern rear end/axles

The 8.25 will have a 5x4.5 bolt pattern. That said I wonder what the rear ratio is in that 8.25 rear.