I am putting back an engine that has incomplete/missing parts from the teardown. I am needing to know the bolt size and length(s) for the 12 bolts that hold on the stock (original) exhaust manifold for the buick 3.8 231 v6 engine. Year is 1984. Are they all the same length on both sides? Anyone have a diagram showing the bolt placement and length of each? I believe they are 3/8-16 thread...but I might be wrong...
