A 9" rearend question for the "Mad Scientists"

[AJohn6]

I ordered the Currie 9+ Centurion Ford 9" reared end housing, 3" DOM tubes, late model big Ford billet housing ends to go in my '71.

My question is; should I center the housing or center the pinion?

I have heard that Ford centered the housing in order to have constant pinion angle laterally or side-2-side as well as the vertical pinion angle. I would rather have equal length axles and the housing centered but am willing to center the pinion if needed.

All advice is greatly appreciated.

Respectfully,
Adam