sorry i guess im the only one in the world and tr the gives praise and love the block gaurd i use them in almost all my motor build and never had one problem i have one in my b16a2 hatch hatch right now and not one prblem never over heats or even gets close to hot or leak or anything and i rev the shit out of my motor all the time i guess im the only one : o ( and this is the only one i use sense i no the people and work thay do is perfect http://www.azracemachine.com/BlokGardDesc.htm