nice work Andy
I spent hours welding on this car's unibody and k frame,

There is no cage in the car but it does not show any flexing in the unibody after pounding it on the road course. Car is HP limited, not handling limited. Does less than a 2.5 minute lap which is the "bar" at the glen for a good lap. I bet $$$$ it would be nosing/pushing that green brick thing thru the turns without a problem even being hp limited. Absolutely amazing handling large blue concrete block with on center steering feel like rack and pinion steering with factory cruise control.

Concrete beats brick

A welded K frame is so critical to the car's handling and rigidity.

I used the frame boxes that used to be available & boxed in the frame rails on this car among with many other strengthening / other welding tricks. Weld weld and weld some more. Remember cop cars had 110 or so more welds on them.

The car is very tight but i am sure a shock tower brace back to the firewall will not hurt.

Most overlooked flex area by everyone is reinforcing the bracing and package tray behind the rear seat. This is not conjecture but something learned by paying attention to detail.