'70 Dart 392 Project; what direction?

Getting closer on this D60 build. Got my axle ends welded on and everything seems great, except that now when I install my axles they’re contacting the pinion thrust spacer pin…. Double checked my housing measurements and they’re spot on… got an email into Doctor Diff cause it’s after hours. There’s nothing on the website that specifies where the axle shaft measurements are taken from so I can’t verify axle shaft accuracy until I hear back. Little frustrating but I’m sure it’ll get fixed. Still need to clean up and install my new pinion bearings/seals then ready for checking backlash and pinion depth but getting closer.

The culprit:

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