I'm not surprised when I see someone has a simple accident and they get major injuries. with Fiberglass or Aluminum covering this type of chassis, you can bet on a injury if a accident happens.
That was why we completely disassembed KMP259 when I got it.... After many years Racing at high speed and seeing some bad accidents, we decided to change and build KMP259 for a Track ...but more importantly make it safe and add protection to the occupants.
Here's some of the ways that we approached re-enforcing the Chassis, we started with the door bars...and worked them into the floor of the chassis.
Now look at the floor and the re-enforcement we put into the structure under the seats.
The bottom of the doors wrap around to the suspension pick-up points ....then we ran tubing down the bottom of the doors to the main hoop under the dash.
Then we re-enforced the main hoop both on the sides as well as the Petty Bar.
Then we ran bigger tubes from the Dash hoop down to the Shock towers and accross the shock towers....in addition we added cross bars to the main chassis