I have the SD, UD wires, and Motorcraft thin-wire plats...It is a great setup. The only reason I really noticed anything was because 1: my original plugs had like prolly 80K on them, and had about that much gap, and 2: I desnorkled my airbox at the same time, so it sounded different.
It is a quality coil, I'd say worth the money. Get Wayne's wires and some Motorcraft plugs, and you'll be set with a good, reliable, consistent setup. Just make sure to gap the plugs at .060 or .065 to get the most out of the hotter coil.
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