I'm looking into a couple manifold options and reading conflicting opinions on other forums.

For my pre pollution 253 which is being rebuilt I'm after a new inlet manifold (I'm adding 4b carbie) I think my choices are the KC253/308 or the Edelbrock Performer.

Much has been shared on here about the KC and casting sand found throughout! So if I went KC I'd be doing an abrasive blast to clean it up (?).

So with that in mind are the two manifolds the same or differ enough to go with one over the other?