well...forgot to update. My dad had a new exhaust put on it, and, while the cat back was off, we decided to check out the cat, it had nothing in it. And a bunch of black soot was shooting out the exhaust on its way to the exhaust shop...and, its been running good ever since.
So...I think it may have been the cat was clogged, and it cleaned itself out.
It still acts like someone pulled the plug at higher RPMs though...like its not getting enough fuel or something. But, it has a new fuel pump...not quite sure whats going on there.
But...running good until it started doing the above.
Still not as good as my SS/T though...lol I passed him spinning tires