Does anyone know what year Fountain changed the windscreen on the Lightenings, from the Executioner style to the curved style?

And, is there a resource to chase down some pedigree, history on particular hulls?

Thanks in advance for any responses.

The curves windshield came about on the 42 in 1998. They became known as lightnings and the others were lightning classics for a year or 2 then renamed executioner.