BAT Z. Legit DZ stamp?
 

Legit? https://bringatrailer.com/listing/19...mpaign_2648441

I know the rear springs are not original. Always a red flag to me.

I think the pad is OK.
Was the axle rusty and they smoothed it around the axle stamp?

No opinion on stamp for lack of study.
Looks like someone spent a lot of time on the car .

Tag on tranny is for sure rusty.

309 master cylinder is a re-pop.
Just completed the "309" marathon with plenty studying.

Looks to be plenty other re-pop stuff on car.

Driveshaft strips are nice and neat.
Factory driveshaft stripes [well on "OLE BLUE" anyway] are very sloppy. Obviously done with a brush.

Other paint markings are very sloppy also.
A few example's


.

stampings look good. As mentioned repop springs and other items.

Rear axle tube looks like it was possibly skimmed with filler around the stamping due to pitting.

It has the 1970 Style / Later NOS Spring plates as well.