Most likely this is a 1926 Fordor, based upon the presence of wood spoke wheels., in addition to sheer production numbers in favor of 1926. I believe late in 1926 (meaning for the 1927 models), a Ford directive was sent to dealers informing them that henceforth the Fordor would be come from the factory with the new wire wheels, not wooden spokes. Tudors and Coupes may also have been included. The remaining wooden spoke wheels were to be used up on the cheaper roadster and touring cars. However, nothing with Model T's is ironclad - there are ALWAYS exceptions to every rule or convention. But I'd say the vast majority of 1927 Fordors had wire wheels. A photo of the carburetor and headlights would be helpful in differentiating between 1926 and 1927. If there's a Holley NH carb, it's a 1926 - assuming everything is original. If it's a Holley Hotspot or Kingston Vaporizer (weird-looking animals, that they are!), it's a late 1926 or 1927. If the headlights are stand-alone without a crossbar between them, they are 1926. With a crossbar (two or three varieties possible), it's a late 1926 or 1927.
But to me, the wooden wheels almost assuredly make this is 1926 Fordor.
Marshall