* Gear ratios: The specific gear ratios in the automatic transmission varied slightly depending on the options selected.
* Rear axle ratio: Different rear axle ratios (e.g., 2.80:1 vs. 3.00:1) significantly impact top speed. A lower numerical ratio allows for higher top speed.
* Aerodynamics: Minor variations in body condition and accessories could slightly affect air resistance.
* Vehicle condition: Tire pressure, engine tune, and overall mechanical condition all play a role.
* Road conditions: Headwinds and incline/decline greatly affect top speed.
While factory specifications aren't readily available for a precise top speed figure, road tests from the era suggest a top speed in the range of 100-115 mph (160-185 km/h) is plausible for a well-maintained example under ideal conditions. However, it's crucial to remember this is an *estimate*, and individual cars might vary.