SJ Stock exhaust question

[6501]

Is a stock 650 exhaust the same as a 701 stock exhaust?

Thanks

 

[Storbeck]

The shape of the port where the exhaust manifold joins to the cylinder is different on the cylinder, I would assume the manifold side matches which would mean that they'd be different at least at that point.

 

[6501]

I assumed they were different. Thank you.