Well put, Kevin.
TRs can and do flip, roll over. Not often, but anyone witnessing a roll will remember it for the rest of their days. Think John Welburn at Goodwood. They will also insist on a roll bar before even thinking about going on track. No ifs, no buts, end of.
One additional priority, and no doubt Mick Richards will be hot on my heels with this one . . . .
Firewall.
That's an alloy sheet between the rear trim panel of the cockpit and the fuel tank. The intention being to contain fuel in the boot, rather than allowing it to flood through into the driving compartment in