[Don Rogers]

Blast..To answer your question about what head was correct for a 36 Club Cabriolet:
1 Aluminum Only No cast iron
2 40-6049/50-A2 Alum if you have flat pistons.
3 48-6049/50 Alum if you have domed pistons.
4 68-6049/50 (-A) Alum if you have domed pistons and your vehicle was manufactured
in late Sept 1936.
Your vehicle would not have cast iron heads coming off the production line.
If you decide to use cast iron heads, use 40-6049/50-B for flat pistons and
68-6049/50-B for domed pistons.