The X-Wing Alliance Upgrade Project is a graphical update to the Lucasarts flight sim X-Wing Alliance. This, combined with other mods, will allow you to play through X-Wing, Tie Fighter, X-wing Vs. Tie Fighter, and X-wing Alliance with upgraded graphics, and improved gameplay mechanics. Other customized missions can be found onder the "addon" section.
The last variant of the Tie Experimental seen in the campaign, but not the last crazy tie configuration you will see here... There are many more to come, these were all just updated story mission ships. >:P