| Alot of people don't know about indexing the strut mounts. It's not too big of a deal. Here's the low down.
Our car's have a two peace mount. The upper plate not only mounts the strut to the body, but also retains the strut and spring combo together. This pice is stationary (ie:not moving). The lower peace acts as a buffer, and sort of bearing. While the lower unit sustains the spring in place with the strut, the strut still needs to turn. So between the two plates is a matching contour acting like a bearing. If you noticed when you had the mount out of the car, it looks like a triangle. Look close enough, and you'll see it is marked. There are a couple of marks on the top one. One designating the side of the vehicle. The other is a dual purpose, it looks like, > . It indicates whtch direction is out, and also signifys an INDEXING point. If you then look at the lower section of the mount carefully, you'll notice a simmaler mark, > . This is another reason you should use a spring compressor. When you are re assembling the strus assembaly, and decompressing the spring, you'd need make sure the two indexing marks are alligned.
Maby someone out there could explain why the need to be indexed, because I unfortunitly don't know. But I do however know from experiance that if the strut mount isn't indexed, it WILL lead to a "popping" noise. Mostly on turns with a bump to them. | 
No prob. It's good info most people miss.
