The text you've provided appears not only to describe but also to be an excerpt from an article or passage about the history of the Ford Thunderbird, specifically focusing on its fourth generation which was manufactured between 1964 and 1966.

Here are some key points that can be extracted from this information:

1. Unique Design Feature: The 1964 model year stood out because it retained the traditional spelling of 'Thunderbird' across its hood instead of using a chrome emblem, as seen on previous models.

2. Sales Performance:

- Total sales for 1964 reached an impressive 92,465 units.

- This represented nearly a fifty percent increase compared to the preceding year's figures.

3. Declining Popularity: Despite overall good sales numbers, there was evidence of waning interest in certain variants. Specifically, only 50 Sports Roadsters were produced from factory floors.

4. Model Variations:

- The revised lineup included hardtop and convertible versions alongside a Sport Roadster with an optional tonneau cover.

- Other variations included the Landau model equipped with vinyl roofs, simulated landaui irons, as well as wood grain interior trimmings.

5. Comparison to Competitors: Contemporary reviewers felt that competing models like Buick's Riviera and Pontiac's Grand Prix were more roadworthy than their equivalent Thunderbird counterparts due in part to better handling capabilities on curves and bumps.

6. Performance Characteristics:

- The large personal luxury car was powered by a 390 cubic-inch V8 engine producing around 300 horsepower (224 kW).

- This resulted in somewhat disappointing acceleration times, with the T-bird needing nearly eleven seconds to reach sixty miles per hour from standstill.

7. Styling Evolution: As part of its overall reimagining for this generation, Ford opted for a more squared-off design aesthetic that departed significantly from earlier Thunderbird models known for their sporty appearance.

8. Production Periods:

- The fourth-generation Ford Thunderbird was produced between 1964 and 1966.

These points capture the essence of what can be gleaned about this particular model year(s) based on the provided information, though it should be noted that there may exist additional details or nuances not explicitly mentioned here.

1961 ford thunderbird images