can any one help me identify my wheel cylinders they have an oval projection through the back plate with drillings side by side as i wish to replace them and have no idea of donors age and cc by looking on e-bay they apair not to be bendix type but i can not see any for a serria that look like mine

Look here:

http://www2.qha.com/catalogues/QH14.pdf

At page 12. You should be able to identify it.

David