last week my truck started puffin white smoke. i immediatly knew (thought) that it was head gaskets. after tearing everything apart the past couple days found cracks in between valves on both heads in multiple places. So, i ordered new heads (evidentally you can't buy remans) they cost me 800 total. Also i am going to try and replace my O/FTS. is it ok to use a used O/fts jus to c if that is my problem? also replaced fsd and bought cooler. any heads up on anything i am doing would be appreciated.