What are you going to do with them? Just drive to the track and run or drive the car a lot with them on?
If you are just driving to the track, 11.5X28 ET streets will hook the best and will fit on the stock rim.
If you are cruising or driving long distances to the track, go with Nitto 275/60 Drag radials. They won't hook as well as the ET Streets but will last longer and handle a lot better.
I recommend taller tires when going with a DOT tire, because they will allow you to leave with more boost and will put a bigger mph number on the board than a 26" tire.