Been doing more reading and see that the rear dif mount is a good idea. How much difference does it make to go to the stiffer apikol mount? I was thinking about this because if it makes a difference on a stock or stock-tuned rs it should make an even more pronounced difference when moving to a manual with even more power? I just can't get over the cost for what it is. Double the cost of the Audi oem mount? I didn't think ANYTHING was ever more expensive than if it had the four rings on it.