Which Header gasket do I need

[Crd80BU]

Here is the engine port, which is where I'm confused, the 350 heads ports can be round, square, oval and stock, I sent this picture to the guy that's helping me put my elco back together and he says this port is considered round

This is the headers which doesn't look like my heads ports but doesn't look like any of the ports listed

and this is the gasket Im thinking I need
http://www.summitracing.com/parts/sum-1 ... pplication

is this the correct gasket for this application?

 

[chevy2480]

You should be fine with round gaskets. Imo. Ive use both round and sq. but find the round to seal better on a stock head

 

[spidereyes455]

For what its worth I have always used stock manifold gaskets with headers and never had a problem with leaks and they dont seem to blow out like most header gaskets. And there less expensive too. Also I have never had any luck with those copper gaskets they seem to be to stiff to crush and seal properly