Hi I’m new to the forums, I want more power out of my 99 400ex and want to get a 440 big bore kit with a 11.1 piston and a stage 2 cam, but I’ve read that they blow head gaskets bad and I will need to buy heavy duty head studs, and some people say they have the stock studs and have never had a problem with them. Is there really anything I will need to buy for a 440 kit to be reliable?