If you want to prevent torque loss and are frustrated by the missed shifts and sloppy engine mounts of the E30 M3, then solid mounts are what you need at the track. All mounts are beautifully machined from 6061 T6 billet aluminum. The kit includes 2 engine mounts and necessary hardware.
These have been used around the world for many years reliably, with much success on the track however: they are strictly for race use only.