Brake Discs & Pads - 1972 Spider

[Broadsword]

I dismantled one rear brake assembly to check out the condition of the discs and pads.
The discs looked to be pretty good (with a catch), but the pads were well worn.
The discs didn't even look close to 10.8mm thick, yet the wear suggested they are reasonably new.
There was also a spacer about 5mm thick to the rear of the wheel.
Is this standard, or has someone made up for the thinner disc?
In looking at what is out there in the way of discs and pads, if I stay original the disc seems to be 227mm diam x 10.8mm thick, but I seem to be finding different pad thickness information of 12mm or 17mm.
Can someone tell me what the standard is?
I must get a workshop manual!
Many thanks,
Broadsword

[So Cal Mark]

the spacer is factory original, front pads are thicker than the rear pads, don't attempt to interchange them

[djape1977]

if discs are over 9mm you're good to go.

[Broadsword]

Thanks for the feedback.
I am going to get all four wheels stripped to see how they all look.
i have not measured the disc I have removed, but it looks well under 9mm even.
As for the pads, they are definitely too thin.

[djape1977]

not really sure if new were 10.8 or 12mm, but for both 9mm is recomended minimum.
new front pads are about 10mm and rear 5mm, that's without metal part, just braking compound. 3mm for front and 2mm for rear is right time to replace.
don't bother with anything fancy, just get a set of new discs and try to find as soft as possible pads. lucas in green box works excellent, but are getting rare