First off, welcome to the forum! I'm pretty certain that you will have to replace the headlight for best results. The tricky thing will be to find a headlight that doesn't cost an arm and a leg (as you probably have already seen). You may want to send a message to MrMopar to see if there is a tail light assembly available from him. If nothing else, you can post on the "Want to Buy" section to see if someone may have one for sale.

WTB - Items/Parts Wanted to Buy - CrossfireForum.org