Yes they'll work with FSD, or any other strut that has the same size shaft diameter as stock. Yes you'll need an alignment. The build tolerance for 1st Gen cars is +/- .5 degrees of camber. There's no way to guess what will be equal for your car by looking at the plates, you have to have it measured. These plates are somewhere in the middle between the stock rubber mount and hard racing mounts. For the most part you won't really notice the difference in terms of noise or harshness until you hit a pothole or substantial seam in the road. Then you'll notice more of a jolt being transferred to the car than with the stock rubber mounts.
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