The Floor Reinforcement Kit is good
for a Road car, but a Caged Track / Race Car
pulling higher lateral G will start a 'sawing' motion
around the bushes and causing 'tears' in a very
You will more and likely see tears as you have
strengthned the locating bush pick ups.
Its the Torque steer from the diff that causes
diff cradle / rear subframe, to pull/push on the bushes.
Several fully Caged Track cars here in the UK have
all suffered with this issue.
Just trying to help.