you have noticed lads have you!!lol!!
the drivers side head where the manifold bolts to the head!......hit something the other day (unavoidable) ripped the manifold clean away tried to re-fit manifold ni joy so i drilled new holes in the manifold and the head re-threaded both but the manifold wont seal properly so thought new heads but was told to buy new engine it's cheaper than buying both heads as i was told if i change 1 i have to change both????