Yes that's a SV Reliant manifold. Not 100% sure about the carburettor without rummaging in some dark cupboards.
I ran one of those manifolds on my Nippy for a long time, with an adapter to take a Mini S.U. With a bit of work on the inlet port it went quite well.
I ran one of those manifolds on my Nippy for a long time, with an adapter to take a Mini S.U. With a bit of work on the inlet port it went quite well.