Thats a pretty cool ride, a 9 second car... Anyways yeah 33's are nice, and I'm considering the 35's next. However since you are in the mechanical side of things... you should know that our stock rear won't hold up to them, and our front diff is a problem after 33's at best.
Any ways feel free to ask questions, most of us would be honored to help you out. And do you have the G80?