They are really built with the Spoon two-piece beam welding kind head gasket, which raises the compression ratio above the mass manufacturing engine. Sorry if this is covered someplace else, but I just are not able to locate it in the community forums. In case you have a website https://jdm-mitsubishi-outlander99840.rimmablog.com/27761090/jdm-toyota-3sgte-engine-for-sale-used-gen-3-3sgte-things-to-know-before-you-buy