Its the one thing you have to get right! Harnesses are very good, but they have to be done properly, as the only way you will know they dont work is if you crash, and you cant rewing real life ![Wink ;) ;)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Yep, but that's because there isn't really a definite answer short of a few members with different setups taking their cars out and stacking them. Whilst someone sits on track side with a clipboard that has tickboxes for Dead, Injured and Peachy
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Using a standard rear brace is not sufficient as a harnesses mounting bar however a weld in one would be if constructed properly Ill get a pictures of a mates to show this.