Shock gaiters, spring seats and bump stops

What is the stamped numbers on the struts at 45mm !
I've used stand & after market jap bodies & they all 50mm.
Backs sound original & normally are as not easily matched replacement.
Some standard non R nissan struts are 45mm bodies ...
bumps should be ok, I used those kits on a GAB set.

I wont be with the cars again until Thursday but I'll see if I can get that for you.

Seems normal to me as even the n14 Gti Koni inserts were 45mm rear and 40mm front as confirmed by koni number sheets and a member from the OC who has a set.

NX used same shocks but 40mm front and rear with special part number for 45mm rear as some had.

I have a set of GAB rears which are 50mm casing, no front but looking online the front look to be the same.