Ronald:
What is it you want to know about the engine? It is a Willys / Kaiser F-head 161. It has been modified for the dual side draft carbs. They were made with a single Carter YF in the US. Brazilian models were produced briefly with a twin carb head. Also down draft Carter YF carbs. I'm in the process of making the twin carb mod like the engine in your pics with twin Carter YH carbs. Your motor could be from 1951 (ish) To 1952 (ish) Willys or later Kaiser cars.

Hope this helps
Paul