Hello, so I have my 7mgte ripped down to the block and head. How should I prep the head/block before putting head gasket on this is my second one due to not doing the first one correct and it lasting 3 runs up and down my road. Have the arp head studs already. Do I HAVE to have the block and the head machined and resurfaced? Probably want to go with a metal head gasket with the arp studs not too sure yet looking for the best options for it to hold up. Not running much boost have stock ct26 turbo maxes out the stock boost gauge I think I’m getting 10-20 max. Thank you for any info!