end gears to help you get into the 12's. How much of a top speed loss do you think you got? Just curious. My '85 vette with 230 horse and goodyear gatorbacks outruns my Z with 300+ horse at the 1/4 mile drag strip, but I don't care! Because in the real world my 'Z' eats my vette in every catagory. It is defintely an overall complete performer! Cheers!