Michael,
Playing a tape of a thunder storm, while engaging in some fun thing at the same time may help Taylor be more relaxed when the real thing happens.
I actually have a tape of a Thunderstorm but it is something I bought several years back during our Halloween time and is just meant for entertainment purposes such as if one was having a Halloween party.
As for the fireworks, Cody had that experience last July with the neighbor behind us shooting them off in his driveway and I was outside talking to an adjacent neighbor.They were popping off directly up above our heads; and the people were laughing because they thought it was funny that Cody got so scared

Cody was terrified and was actually ducking with fear. He was on leash and he took off going so fast, with me, that it was the quickest walk/run I ever had with him. As soon as we made it home, he went into the bathroom.
You may be able to desensitize Taylor to the noise with a tape, but if you actually take him to the firworks display, the "sight of it" along with the noise may be just too much for him.
Here is some info I found
http://dogsonly.org/StormFear.html
From Cafe Press, you can order this CD with various noises on it, including fireworks and thunderstorms. I am sure there are others, you just have to check on line.
http://www.cafepress.com/cp/prod.asp...audio.66664317