To me it looks like the frame of the 1957 Alfa-Abarth 1000, eventually nicely bodied by Bertone for the 1958 Turin show. The experimental car showed however too much flexibility and, despite attempts to strenghten it by Giuseppe Busso and Conrero, it was abandoned. But the involved people didn't regret that decision since it was also the starting point for the Giulia TZ, for which Alfa Direction gave green light in 1959. BTW, if you compare the frame layout of this Abarth experiment with the TZ frame, you can't miss the parenthood (unlike the Asardo

): the TZ is basically the same layout with extra tubes, especially on the sides and in the scuttle area.
I would recommend that, if you go ahead with a 'special' project, you take inspiration from the Tz frame instead.