I'm looking to buy an other supra but this time i want to do things right. I'm thinking of buying a nice stock supra but right when i buy it i wanna take it to a shop and get the headgasket replaced with the hks metal HG and torque it correctly. Now, my question is: what should be the proper sizing for the head gasket since it wouldn't be a blown one. also, since it does not need to be re-surfaced, what should i be paying for a job like this?