For the shoulder harness something like these parts
http://www.jegs.com/webapp/wcs/stor...goryId=23519&parentCategoryId=10495&langId=-1
471-109H screw in back of the seat
471-107H clip on to the eyelet of above
I don't know if the thread size is right.
As for the Cobra that went upside down. The one a saw was a long time ago, around 1994 or 1095 I think and I was told it was a real Cobra not a replica. If my memory is right I thought the car was silver. So if the one you saw as at a later date then that makes at least two cars on that turn.
I remember my wife saying that I am going through that turn so slow. I replied that is on purpose! I didn't see much to be gained in going for it on that turn and a lot to lose.
BlackICE
Just saw this post, the Cobra driver was "Lew the taxman" and he spent weeks in the hospital and is still not 'ok', he got real cross'd up, overcorrected. When he rolled his left hand was crushed. Not a pretty thing,
he should have had arm restraints like the sprint car guys are required to wear. Sadly I was there, the car was bright yellow.