Just a quick review/endorsement of this mod.
My car felt particularly vague and when driving fast the shifting was horrible, specially when shifting near the redline (it is a manual, BTW...)
I ordered a metal insert due to some reports that the poli ones tend to melt with the mount after a while and therefore are a bitch to remove.
A friend of mine has a garage with a lift and impact gun so, I borrowed them and install took me 10 minutes from start to end, wit