Can you feel improvement after fitter USCT stage 2

Hi , I am hoping to get some guidance from personal experience.
68 fast back 440 ,727 street and strip car. 600hp with Transbrake.

I am looking at the level 2 USCT kit
67-69 Dodge Plymouth A Body Total Chassis Stiffening Pack

Are all the parts listed in link above necessary for my street / strip purpose. Frame connectors i understand will help, but not sure about the rest of items ( torque box's + inner fender brace) and if they will hinder my strip use.

I would also be fitting Calvert mono leafs / Caltrec set up.

Any racers out there who can share their experience. How did car behave on street / strip with the level 2 USCT.

Thanks in advance

Put frame connectors in it with a 6 or 8 point cage and forget about the rest. When I was drag racing my car, I was worried about it slowing down with the extra weight of the cage. It actually went faster, and started pulling the wheels. You could feel the car was stiffer with the cage just driving down the road.