The upper jug in the photo is std k5 . In the lower there seems to be none of those small bores on the holes where the studs come out. I have 8 rings and rubbers that go in the small bores.
Why in the earlier one (k1-k2?) there aint none of those and newer ones have.
The lower jug is 67mm bigbore and its for sale with pistons.
Also looks like the chain guide is broken and the part of it is in the pan.
