Yes, but DeLo is closer to B28F. Every stock engine I've seen has funny shaped shear-head balancing screws (always wondered why they looked that way. Now I know). Only mentioned in case someone w/ sheared screws thought their's hopelessly stuck in manifold. Would probably back right out with a screw extractor. My R30 has three normal screws BTW, as does the B-whatever still in back of my truck. Bill Robertson #5939 >--- In dmcnews@xxxxxxxxxxxxxxx, Martin Gutkowski <webmaster@xxxx> wrote: > B28E has solid screws that can't shear, and also used CIS however. > > content22207 wrote: > > >B28F used "shear-head" balancing screws. Are designed to snap off > >easily when snugged down. > > > >