2012 Base Sport 7AT. Only mod is an $800 ExoticSpeed cat back exhaust. This time I tried weight reduction. Removed the spare wheel and tire, jack and tools, child seat anchor bracket, front and rear tow hooks, and rear floor mat. That added up to 46.8 lbs. I now weigh 170 as I also put myself on a 5 day diet and lost 3 lbs. Both previous times I went with more than 3/4 tank of gas, this time I had less than 1/4 tank. Did a 13.066@108.23 and a 13.078@109.32 on a 54 degree day. I drove a 2014 Corvette on Friday that felt alot faster than my car. But in the November issue of Car & Driver it said the new Vette does the 1/4 in 12.5@116 so my Z is only a half second slower for half the price.