and then there is the salt flats, you wanna see some tech rules????????? I build em to fit nhra x2 for the scta........ How fast ya wanna go? how much ya got? . that is the jest of it. on the be for real side of this rant, I had a very good long time buddy die in okla at the dragstrip a couple of months ago in a high 11 second chassis car, he rolled it about 100 mph , because a wheel adapter broke on the front. I know never use em either, but he had on a legal open face helment, it came off, he got killed. 5o yrs old with a family ... think about it we can all use some rules....... just sayin..