Frank,
I think I might have seen this car in West Wales( Haverfordwest) round about the time of the centenary events.
It was in car park, so I only got a cursory look at it but what did strike me was the way the filter elements were attached to the outside surface of the bonnet

The filter boxes themselves were flat 'pan-type' and looked very much like those often found on MGBs using the twin SU set up
Like you, I had no way of seeing under the bonnet so couldn't find out what- if anything- there was bewteen the fdilter box and the actual air intake to the venturi

On a very personal note, I wasn't too keen on the aesthetics

regards,
G


GLLHG