[Jac Mac]

My earlier post was not in relation to a head-on type incident, but the one that is far more likely to occur under track-day or public highway operation. I think we can take it as given that 'most' owners of these cars are unlikely to get into a situation where a head-on is likely of their own doing ( David Briggs might disagree- hope you folk are well on the way to a full recovery David.)
The more likely scenario is one where you spin out of control & hit a barrier whilst traveling sideways, or get t-boned at an intersection by another vehicle and either you or your passengers head will contact the two fore/aft bars at the center of the spider or if you have them fitted ,those immediately outboard of your heads. These are the bars that will put you in cuckoo land even with belts fitted.