Any chassis reinforcement helps but I tried racing three
different ways
First, we raced with no add ons. (cracked the floor just
below the back seat, tweeked the quarter panel
In a different car we ran just subframe connectors
A little twisty on the launch but a big improvement
Added the 8 point roll bar
Go cart like runs, lose sight of the horizon, killer 60 foot
times.
At some point we fixed the cracked floor on the other
car and added a 6 point roll bar. Nearly as good as the
car with the frame connectors
My point is if you tie the car together with a roll bar you
seem to get much better performance then with frame
connectors alone