Building a Dana 60/pinion offset?

Dana67Dart said
IIRC a centered pinion would result in unequal length axles. Ford 9 inch are centered and each axle is different. Mopar pinion is not centered an each axle is same length.

From what I've seen, 8 3/4" rear with factory dimensions has equal length axles. Dana 60 axles are a different length by 1".