Honestly, the last set I recieved on my Proform small block pump turned to mush when the coolant hit them. I had to pull the plate and the pump all back off thinking the rtv was leaking, and it was the gaskets, not the rtv...Now I have blue rtv on it, and no gaskets and no leaks. I wasn't able to order any either when I tried to order some from Hughes. They were out and they said for some time they haven't had any.