where cost is not a factor. When i started out in stock racing you could buy a car already built that could run .5 to .75 under the index for 7k to 10K. Now a good set of heads costs 7K, a transmission 5k, set of pistons and  ring packages can run 2k. convertor 1K. Gone are the days that using factory pistons or trw pistons.

There are a few classes usually the slower classes that can be built for about 10K or less.