Pinion angle and diff centering

Hello FABO!

I'm welding the axle tubes to the perches and i need some affirmation that in not forgetting something

to get the diff centered i can put a straight edge on the drum (with a couple of lugs to make sure its on) and measure from the fender and frame rail to make it even on both sides.

Right?

To get pinion.......uhhhhh, forgive me, i did use search option, but please double check me on this.

Pictures are from front to back.

Engine pan rail

Slip yoke

Driveline

Pinion yoke

Diff housing

What say you?

Welderup?
67 barracuda fastback 383 4speed 8 3/4.

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Here is a video of my circle track car on my chassis dyno measuring pinion rotation on acceleration and deacceleration. It's a metric 4 link rear suspension and the pinion wraps about 2.3 degrees on acceleration under full load.