Dependent on the age of the car the front four bolts may be seized into the
body. If in doubt chisel the heads off and pull the subframe off backwards
over the remains of the bolts. This should allow you to remove the remnants
hopefully without damaging the bdoy and requiring repair panels. Personally
I've only ever used standard bushes, the rear subframe is less prone to
movement than the front and therefore less affected by uprated bushes, but
what the heck they can't hurt and they aren't a significant expense.
As for special tools just make sure when removing the rear bolts that you
use a six point as opposed to a twelve point socket. This reduces the chance
of rounding the heads to almost zero and the worst that will happen is that
the bolts will snap.
Phil Gardiner
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