Been there done that
I've had my car dyno at Turbo tech with George, was happy, his dyno runs a big drum, so if your going to throw down 600 plus with a small tire, that's where you need to go, my latest combo was dyno at horsepowerconnection.com in Lacy, made 890 to the tires smoking them on the top end, very easy to work with and a good friend. I also took my car to Blood enterprises for a free dyno day, very nice people, there dyno could not hold my power with my small tire, tried two runs the tire's started spining as soon as boost came in, mustered 400 hp and one hell of a smoke show. He said 500 to 600 hp max on this dyno. All three will be good for a car below 600hp to the tire. Good luck.