Exhaust manifold sp vs bp

Im on a chicken build and bought a 750sp and a sts bp pipe but i dont have any manifold yet ! There is some flange type from mani to headpipe but is there some difference on a bp vs sp at the exhaust port flange or they are all the same!
 
Couch models use a bigger 4 bolt pattern where the head pipe bolts on to the manifold. All 750 standup models use the small 4 bolt pattern and that's big or small pin. 650 manifolds are 3 bolt on top and most aftermarket pipes use the 3 bolt type.
 
Ah, I should specify I was talking about the exhaust port on the cylinder to the manifold. They are different at the manifold to head pipe joint as buzzard said and I think you said in the original post.
 
Ah, I should specify I was talking about the exhaust port on the cylinder to the manifold. They are different at the manifold to head pipe joint as buzzard said and I think you said in the original post.
No you were right i was asking about exhaust port flange thanks man
 
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