OBX brand are suck..once I bought a camshaft for my d16 sohc v-tech. the cam shaft damage my d16 head by hitting the wall because it was not grind properly. So I returned it and got my money back not only that they have replaced my d16 head. not bad but still a waste of time for me. and one more thing it bent 2 exhaust valve and 3 intake valve. this is what I have experience with obx.