b series headers

[mobebk]

i have a b18a block with a b18b head goin into a civic. I always thought that any header would bolt up, but a b16 wouldnt clear the oil pan.

When i was about to buy one, they told me that the
90-91
92-93 and
94-2001 were all different.

WTF. I thought they would all fit. Anyone know?

[Prelude94']

they all are different. They will all bolt up fine but clearance and fitment are going to be a problem.