The last time I did the heads up thing I had to slow my car down to qualify in the index. That was the first problem. Got the car qualified right on the money. First round, got a guy that entered 3 different classes. fast, faster and fastest indexes. Didn't take me long to figure out that being able to run on your index wasn't going to cut it. Faster cars 60 foot better and also have more power to basically play with you all the way till the end of the 1/4 mile. All's he did was kept a foot on me till the end then a little less for the win. . He went on to win all 3 index's . If I had to do it over again, I would qualify the car at the slower index, return it to the normal tune and dump his butt at the end making him break out. Yes there is break outs in heads up. I myself like bracket racing, might try the index racing again as now the car runs under the faster class incex so I can play the game to.