I pulled my carb off today, Than pulled my intake because Im switching from a keihn to a mukuni. This bike is an 88 Electra glide classic. The intake is stamped with "S&S" on it and it has a vertical fin inside the manifold.
the mukuni manifold is a smooth bore with nothing inside.
Do you think my intake is stock?

 

No you have an S& S manifold. The fin is supposed to help distribute flow evenly to both cylinders. Don't worry about it being different.