Like the FE engine idea. The cu. in. can be whatever you want it to be. If you have the 3 - 2 setup it might be a little more impressive as a cruiser engine.
So many great details everywhere you look on this build. These pictures need to be studied for a time to realize everything here. I see that the work crews aren't required to keep up the interior on their rigs. Who would have thought they would have pizza for lunch in New York.
Great looking paint and body trim. There was a time when a bright red convertible, regardless of manufacturer, was considered the most desirable car to own. This build captures that look.
You could go too Google Images and request 1961 Oldsmobile images. Google will provide you with both pictures of current cars along with early GM images. You will be able to look at the body styles from several angles as well as interiors and paint colors. I think you will find that your picture is of a stock bodied Oldsmobile.