LS adapter plates

[radialnova]

Anybody used the cathedral port to rectangular port adapters what brand did you use? did they fit ok. want to use a ZL1 factory supercharger on a ls with a cathedral port head.

[CGT]

I've seen a couple sets, not sure of the brand. They fit "ok"....as good as can be expected. There is no way to make that transition "nice". I guess they serve their purpose. Certainly nothing you'd want on a NA engine. Obviously not ideal for anything as far as that goes.