okay, i've been offered a set of dc 2 piece ceramic coated headers for my 1991 civic si hb... im planning on swapping out the stock engine and putting in a b16a engine first generation..ya.. question is.. will these headers for the stock 91 civic si motor or the d16 i think.. will those headers fit the b16a motor? i dont want to waste my money on them if i can't use them on my b16a.. so help me out plz.. anyone? thanks