where is the most beneficial place to put a strut brace on mk3s to improve handling? i know the mk3s are stiffer than the mk2s but would be grateful to know where it needs em and where it doesn't..
On a road car...um...er...nowhere that will benefit.
On a track car, the front upper might - and it is a might - give a stiffness benefit, on a fully polybushed car, with stiff dampers and spherical bearing top mounts.
More for looks that gains on a road Mk3 though, in my mind.
If you want to improve handling...the strut brace is the last link in a very long chain of changes that give far bigger gains.