the bp saw many refinements as the "next" engine in the evolving b engine family...
i allways wondered why a graphite gasket was used in the b6 anyway.. honda engines have been using MLS gaskets since the 80s.. even the d- series non vtec engines like the d16y7 civic economy engines, came oem with a good quality MLS headgasket... honda plays alot with high compression so a MLS is a good idea anyway...