1938 Alfa 308

Originally built for the 3 litre formula of 1938 I'm looking to build an Alfa 308, specifically the one Achille Varzi took over to Argentina and competed with in 1947. Here he is in it at the Buenos Aires GP..



The wheelbase I have is 275cm but would like to know if there's a blueprint somewhere that would help with the master as I don't know of anyone making the Alfa 308 in 1/32?

Thanks for any info.