Well we have broken into 8 seconds now with jap tech and sponsers. Still not earth shattering!
Some examples of using technology into an america sports car. The Skyline is twin turbo and modded right, well lets see what happens when we twin turbo and mod a camaro. Dammit it didn't pull in the 7's, we shot down to the mid 6's!
http://www.tweaked2.com/index.html
And a mustang that is pulling 7's.
http://www.mustang.is/dragracing/pages/1998-mustang.htm
So once again america muslce is pulling ahead, can you produce something for the 300 mph car?