Thread resurrection
Check this out
http://www.bkauto.com/R_1203_BMW_E92...r_p/r-1203.htm
It seems like someone has finally made a TRUE bolt in harness bar for track use! And this one is DOT certified!
I have checked with the 4 PCA groups I run with and this is fully permitted. Obviously they mention it's best to have a roll cage etc etc, which I'm fine with.
I wish I had found this out earlier. Well, next year this is clearly my future!