Thanks for the comment guys.
Originally Posted by JesseT
...I doubt that the pumaracing statement is valid on all of these just because of the cross-hatch.
It's also the casting number that matches 81MS6090, but as I haven't seen a 1.6 of the same type to compare mine to, you might just be right.
However I think the combustion chambers are the same on 1.3 and 1.6 carb engines.