Ok here's the low down, I have an 81 strada and a 76 x, I didn't like the way the brakes were acting on the x so I took them apart. I started looking at the brakes on the strada after I broke a bleader screw on the x brakes. The calipers appear to be compatible, same except that the strada has a smaller banjo bolt and is a single piece aluminum casting. I'm swaping! If there are any other issues please give me a heads up. Thanks
Charlie
Charlie