Just make a few phone calls and see what the shop owner can do for you. Just make sure and tell them you have 'X' number of cars and they will give you a price based on that number. (Just hope that all your friends show that day!)

Rob and Joe, at Fordspeed have done some Dyno days for the board. They have given us some great rates in the past, but I don't remember what they were. I don't think it was that low, but they also gave us AF with the three runs. If you want to check with them, their number is in my sig.