Thanks chaps
I hang my head in shame. I have had another look at a Cock 3-view and the position of the outboard engines at half span has done it for me. I am sure my mistake was to see the side fuse fairings as a pair of 'inboard' engines. I remember thinking that they looked too close to the fuse for prop clearance....
As to the noise I reckon only the An-22 would fit not the other possibilities of a mistaken plan view ident.
VP8 - perhaps there is another one about if yours is in bits??
JF