I've changed engine and box mounts 3 times in the last 4 years, not because they were broken/used up, but because i wanted something stiffer. OEM as said, is pretty loose. I've settled with AKG race mounts. Though prob not recommended unless you have a ultra shifter where its paramount to reduce the amount that the box can move below the chassis. (this is NOT for a road car) for road, id probably stick with OEM.