I think the original question concerned the 31A horns selling for $3705.00!!! Is this a misprint, or am I thinking of another horn? I thought the 31A was the smaller horn with the curved throat, used with the 1" drivers. The early models were cast, and the later were reinforced fiberglass. Is this correct? I find it impossible to believe a pair would sell for that price, but have no answer to offer, even if drivers were included. Anyone??