mashp39,
I have not build the King Kobra yet, but i have build a few Kougars. As you probably know, the Kobra, Kougar, and King Kobra are very similar but for size. The little Kobra offers the option of the T-38 or F-16 style tail. My first Kougar was built as designed with the T-38 style tail. However, my second Kougar was built with a swept, F-16 style tail roughly scaled up from a Kobra drawing. I like the swept tail too. To me, the plane flies about the same with either tail configuration. That is to say both fly fantastic!