MLS steel works well for head gaskets, copper HG on older stuff or OEM. Gasgazinch works good on MLS and copper new and if you were to reuse them but coat both sides and the block or head. Suzuki bond for case halves and valve cover half moons but a light coat. Cometic will make almost any head gasket in increments of .005 I think, and stroker spacers from .010 - to almost whatever you want in thickness. Cometic also makes engine cover gaskets in 2 different materials, AFM which you can reuse and a basic gasket material but can easily rip, I like the AFM style. Good?