If you are talking Columbus, I have no idea. In DFW, it's kind of a mix. There are so many "fast cars here" it kind of depends what crew you are trying to fk with. In my experience, a 525whp DSM can get you a long way slaying most imports, and some lightly modded V8's. But there are a LOT of Mid 9sec to low 10 sec V8's out there, like CTS-V's, Vettes, etc rolling around that are going to pound someone like me into the ground if i'm only putting 500-550 to the ground. I've got head work, bigger cams, and a bigger turbo now, maxed out could get me close to 700hp crank, which will help, but it really comes down to who you run across. If the car isn't a pig, 600hp is fun...if it's a pig, 750-800 is where i'd need to be in order to start to be satisfied.