That's quite the cage. Are you going for an 8.5 e.t. certification?
I'm not afraid to cut on this car. I'll probably be welding this up with oxy-acetylene in all honesty.
The car is already a hack job. I'd sure like to cut out the inner fender wells like you did to both shave weight and help with access to the plug wires. Plug #6 is hard to reach on an A body with a B engine in it. The "builder" of the car cut a hole to access the plug from the fender well.