Wheel Cylinder Rebuild
 

I have searched and have been unable to find anything related to my question. I have a 1970 240Z and both of my wheel cylinders are shot. I have looked around but cannot find any decently priced wheel cyl. I work at a parts house and we can get wheel cylinders and rebuild kits for later model (280Z) zcars. I know that the cylinders will not bolt up as the brackets are different however, will the rebuild kits work in my cylinders? IIRC the 240 and 280 both use 7/8" cylinders.
Thanks in advance.