Originally Posted by apecush
His car looks exactly the same as mine, hence me posting in this thread.
It boils down to this - if you strengthen everything else in the suspension and leave the weak link the same, the weak link will deform at a lower load than the overall weaker system (i.e. in the non-M).
You have a choice. Replace a cheap control arm that is easy to install or allow the load to be transferrred to the subframe mount points and then have your rear floor area get torn up.