[justcobra]

Gentleman. It appears that I answered my own question as to a suitable replacement for the front entry inlet FPV plenum manifold for my Boss 260.
Ford Racing in the USA does manufacture Cobra Jet 2011+ 5.0 litre Coyote Inlet manifold but your need the adapters. Both items are listed on ebay usa but you need to work in a gold mine to buy them. U tube and various other forums provide invaluable information.Therefore the conversion is feasable using the USA bits.ps another alternative is to use a Sullivan manifold using a carbie but it is expensive.