Okay I have a 2000 blazer 4.3liter. This is going to be my second time replacing the head gaskets on it. last time I had serious help from a friend who had forty years experiance and the tools to go with it. This time no such help. I am trying to remember what all tools we needed and what size sockets I may run into, I remember using 10mm and half inch . I just want to figure this out before I get ***** deep in grease and dont have what I need. so anyone have a tool list for this job.