probably....reason being that you have 14 year old audio technology. Its not quite as bad as computers, but there have been tremendous leaps in audio over the last 20 years (dont ask me how I know, it may show my age). the crackling is from dust in the electrical contacts in the volume control. dust isnt conductive, so the making/breaking of the connection in the volume is heard as static.
You have 5.25"ers in the kickpanels and rear deck, and I would just buy a good set of coaxials and just disconnect the factory tweeters and not replace them. The new speakers will usually have a decent tweeter in them. They dont make a direct replacement (you have to do a little modifying to get any aftermarket tweeter in). Unless thats something you want to dive into over a Saturday.
Hope that helps...
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