Can anybody help me identify these calibres. They are on a Manx style buggy. I know they are ATE the mountain holes are 3 inch centre to centre two blender two pin. Was told they where Ghia but when I received new calipers they did not fit so im guessing not Ghia. Wonder if they are maybe late bus calipers. Along with the ATE cast into them theirs is also the 30 cast and a 75 as well what do these two numbers tell me. The piston is stuck on the one so want tow get rebuild kits for them