I was looking at the Yank 3000 and the Yank 3200.
3000 has 2.0 STR and the 3200 has 1.86
Although the differences might not be much which is better for 1/4 mile with traction. Which is better for 1/4 mile with street tires. Which is going to be better from a roll. And I am guessing streetablity will be about the same. I have 3.23's and the normal bolt-ons.

 

Not a big difference between the 2. The Yank 3200 will be a little better performance wise, but a little looser.

 

I would take the 3000 with a 2.0 over the other one at the track. It would get you out of the hole faster and that's where most races are won at the track. A street race would be better witht the 1.86 str.