The A6s have a very stiff sidewall where a drag radial sidewall will flex more for better traction. They'll heat up quick they're made from a very soft compound, don't do a huge burnout with them or they'll get greasy. I dont drag race just stating what I know about the tire.
I have drag raced with my road course Nitto NT01s and Kumho V700s on my car a couple of times (the 99 Cobra). Buy them and use them if you can get a good price. Like Anthony said, don't do a John Force burnout, just dust them off and don't smoke them hard or they will get greasy.
Maybe I should put them on my stock 99 rims and use them for racing. But then the car would have a different rim on it for a few months and to me that would be weird. Ahh what to do.