Hemi 360?

do they make hemi heads for 340/360's? i figure a hemi is just a v8 with hemi heads anyway, since the original hemi was a regular wedge motor and they added hemi heads. if someone does produce heads for these sb's, what kind of hp/tq would you expect out of a '76 360? what kind of fuel economy? im droppin this 360 in my 70 swinger an just thought itd b cool to have a 360 HEMI!:grin: