I have a 59 f100 with original 292. engine was running great after pertronix, new carb, headers. I believe I blew a head gasket because I had white smoke coming from the front of the passenger head when I reved the engine. Is was coming into the cab. Also coming from the oil filler tube around the breather. Mt question is what all should I be replacing since I am pulling the heads. I am thinking about having them milled a bit to straighten any surfaces. I bought an aluminum intake from mummert and also new style head gaskets. I have never done this before so learning from youtube and as I go. And suggestions or recommendations would be really great. I'm in Longmont CO and not sure what machine shop to use. thank folks.