How about a little more info? The year of your car, the shocks or system you are planning to use to lower you car?

I have replaced my springs and shocks, and I used the stock ones. I know TEIN makes their own pillow mounts but they are metal rather than rubber or poly and I hear they are more for a race application.

I think in most cases, you'll be using your stock mounts, unless your car is older and they are damaged. In that case, you could replace them with new OEM ones. (Might as well replace the bumpstops and dustcovers too if the car is old).