Whatever....this topic comes up on every board. Here's what I think..take it or leave it.

Unless you're racing the car(drag or road coarse)ANY frame connector is a HUGE improvement! I built mine(no they don't go through the floor) and welded them. They made a huge improvement in ride and handling quality. Eliminated many squeaks and rattles too! Mine is just a street car but it feels a lot tighter,more responsive.

If you have these connectors and it's a street toy....get it on a drive on style hoist with the weight on the wheels, bolt them on..then weld them up! You will be happy with the results!

If this is a race car...think about something that connects/goes through the floor for maximum effectiveness